diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@alloca.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@alloca.h
new file mode 100644
index 0000000..ff85901
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@alloca.h
@@ -0,0 +1,40 @@
+/* Copyright (C) 1992-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _ALLOCA_H
+#define _ALLOCA_H 1
+
+#include
+
+#define __need_size_t
+#include
+
+__BEGIN_DECLS
+
+/* Remove any previous definitions. */
+#undef alloca
+
+/* Allocate a block that will be freed when the calling function exits. */
+extern void *alloca (size_t __size) __THROW;
+
+#ifdef __GNUC__
+# define alloca(size) __builtin_alloca (size)
+#endif /* GCC. */
+
+__END_DECLS
+
+#endif /* alloca.h */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@alloca.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@alloca.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@byteswap.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@byteswap.h
new file mode 100644
index 0000000..83731c9
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@byteswap.h
@@ -0,0 +1,79 @@
+/* Macros and inline functions to swap the order of bytes in integer values.
+ Copyright (C) 1997-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#if !defined _BYTESWAP_H && !defined _NETINET_IN_H && !defined _ENDIAN_H
+# error "Never use directly; include instead."
+#endif
+
+#ifndef _BITS_BYTESWAP_H
+#define _BITS_BYTESWAP_H 1
+
+#include
+#include
+
+/* Swap bytes in 16-bit value. */
+#define __bswap_constant_16(x) \
+ ((__uint16_t) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))
+
+static __inline __uint16_t
+__bswap_16 (__uint16_t __bsx)
+{
+#if __GNUC_PREREQ (4, 8)
+ return __builtin_bswap16 (__bsx);
+#else
+ return __bswap_constant_16 (__bsx);
+#endif
+}
+
+/* Swap bytes in 32-bit value. */
+#define __bswap_constant_32(x) \
+ ((((x) & 0xff000000u) >> 24) | (((x) & 0x00ff0000u) >> 8) \
+ | (((x) & 0x0000ff00u) << 8) | (((x) & 0x000000ffu) << 24))
+
+static __inline __uint32_t
+__bswap_32 (__uint32_t __bsx)
+{
+#if __GNUC_PREREQ (4, 3)
+ return __builtin_bswap32 (__bsx);
+#else
+ return __bswap_constant_32 (__bsx);
+#endif
+}
+
+/* Swap bytes in 64-bit value. */
+#define __bswap_constant_64(x) \
+ ((((x) & 0xff00000000000000ull) >> 56) \
+ | (((x) & 0x00ff000000000000ull) >> 40) \
+ | (((x) & 0x0000ff0000000000ull) >> 24) \
+ | (((x) & 0x000000ff00000000ull) >> 8) \
+ | (((x) & 0x00000000ff000000ull) << 8) \
+ | (((x) & 0x0000000000ff0000ull) << 24) \
+ | (((x) & 0x000000000000ff00ull) << 40) \
+ | (((x) & 0x00000000000000ffull) << 56))
+
+__extension__ static __inline __uint64_t
+__bswap_64 (__uint64_t __bsx)
+{
+#if __GNUC_PREREQ (4, 3)
+ return __builtin_bswap64 (__bsx);
+#else
+ return __bswap_constant_64 (__bsx);
+#endif
+}
+
+#endif /* _BITS_BYTESWAP_H */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@byteswap.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@byteswap.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@endian.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@endian.h
new file mode 100644
index 0000000..5a56c72
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@endian.h
@@ -0,0 +1,7 @@
+/* i386/x86_64 are little-endian. */
+
+#ifndef _ENDIAN_H
+# error "Never use directly; include instead."
+#endif
+
+#define __BYTE_ORDER __LITTLE_ENDIAN
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@endian.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@endian.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn-common.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn-common.h
new file mode 100644
index 0000000..980bfda
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn-common.h
@@ -0,0 +1,329 @@
+/* Macros to control TS 18661-3 glibc features where the same
+ definitions are appropriate for all platforms.
+ Copyright (C) 2017-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_FLOATN_COMMON_H
+#define _BITS_FLOATN_COMMON_H
+
+#include
+#include
+
+/* This header should be included at the bottom of each bits/floatn.h.
+ It defines the following macros for each _FloatN and _FloatNx type,
+ where the same definitions, or definitions based only on the macros
+ in bits/floatn.h, are appropriate for all glibc configurations. */
+
+/* Defined to 1 if the current compiler invocation provides a
+ floating-point type with the right format for this type, and this
+ glibc includes corresponding *fN or *fNx interfaces for it. */
+#define __HAVE_FLOAT16 0
+#define __HAVE_FLOAT32 1
+#define __HAVE_FLOAT64 1
+#define __HAVE_FLOAT32X 1
+#define __HAVE_FLOAT128X 0
+
+/* Defined to 1 if the corresponding __HAVE_ macro is 1 and the
+ type is the first with its format in the sequence of (the default
+ choices for) float, double, long double, _Float16, _Float32,
+ _Float64, _Float128, _Float32x, _Float64x, _Float128x for this
+ glibc; that is, if functions present once per floating-point format
+ rather than once per type are present for this type.
+
+ All configurations supported by glibc have _Float32 the same format
+ as float, _Float64 and _Float32x the same format as double, the
+ _Float64x the same format as either long double or _Float128. No
+ configurations support _Float128x or, as of GCC 7, have compiler
+ support for a type meeting the requirements for _Float128x. */
+#define __HAVE_DISTINCT_FLOAT16 __HAVE_FLOAT16
+#define __HAVE_DISTINCT_FLOAT32 0
+#define __HAVE_DISTINCT_FLOAT64 0
+#define __HAVE_DISTINCT_FLOAT32X 0
+#define __HAVE_DISTINCT_FLOAT64X 0
+#define __HAVE_DISTINCT_FLOAT128X __HAVE_FLOAT128X
+
+/* Defined to 1 if the corresponding _FloatN type is not binary compatible
+ with the corresponding ISO C type in the current compilation unit as
+ opposed to __HAVE_DISTINCT_FLOATN, which indicates the default types built
+ in glibc. */
+#define __HAVE_FLOAT128_UNLIKE_LDBL (__HAVE_DISTINCT_FLOAT128 \
+ && __LDBL_MANT_DIG__ != 113)
+
+/* Defined to 1 if any _FloatN or _FloatNx types that are not
+ ABI-distinct are however distinct types at the C language level (so
+ for the purposes of __builtin_types_compatible_p and _Generic). */
+#if __GNUC_PREREQ (7, 0) && !defined __cplusplus
+# define __HAVE_FLOATN_NOT_TYPEDEF 1
+#else
+# define __HAVE_FLOATN_NOT_TYPEDEF 0
+#endif
+
+#ifndef __ASSEMBLER__
+
+/* Defined to concatenate the literal suffix to be used with _FloatN
+ or _FloatNx types, if __HAVE_ is 1. The corresponding
+ literal suffixes exist since GCC 7, for C only. */
+# if __HAVE_FLOAT16
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+/* No corresponding suffix available for this type. */
+# define __f16(x) ((_Float16) x##f)
+# else
+# define __f16(x) x##f16
+# endif
+# endif
+
+# if __HAVE_FLOAT32
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# define __f32(x) x##f
+# else
+# define __f32(x) x##f32
+# endif
+# endif
+
+# if __HAVE_FLOAT64
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# ifdef __NO_LONG_DOUBLE_MATH
+# define __f64(x) x##l
+# else
+# define __f64(x) x
+# endif
+# else
+# define __f64(x) x##f64
+# endif
+# endif
+
+# if __HAVE_FLOAT32X
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# define __f32x(x) x
+# else
+# define __f32x(x) x##f32x
+# endif
+# endif
+
+# if __HAVE_FLOAT64X
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# if __HAVE_FLOAT64X_LONG_DOUBLE
+# define __f64x(x) x##l
+# else
+# define __f64x(x) __f128 (x)
+# endif
+# else
+# define __f64x(x) x##f64x
+# endif
+# endif
+
+# if __HAVE_FLOAT128X
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# error "_Float128X supported but no constant suffix"
+# else
+# define __f128x(x) x##f128x
+# endif
+# endif
+
+/* Defined to a complex type if __HAVE_ is 1. */
+# if __HAVE_FLOAT16
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef _Complex float __cfloat16 __attribute__ ((__mode__ (__HC__)));
+# define __CFLOAT16 __cfloat16
+# else
+# define __CFLOAT16 _Complex _Float16
+# endif
+# endif
+
+# if __HAVE_FLOAT32
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# define __CFLOAT32 _Complex float
+# else
+# define __CFLOAT32 _Complex _Float32
+# endif
+# endif
+
+# if __HAVE_FLOAT64
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# ifdef __NO_LONG_DOUBLE_MATH
+# define __CFLOAT64 _Complex long double
+# else
+# define __CFLOAT64 _Complex double
+# endif
+# else
+# define __CFLOAT64 _Complex _Float64
+# endif
+# endif
+
+# if __HAVE_FLOAT32X
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# define __CFLOAT32X _Complex double
+# else
+# define __CFLOAT32X _Complex _Float32x
+# endif
+# endif
+
+# if __HAVE_FLOAT64X
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# if __HAVE_FLOAT64X_LONG_DOUBLE
+# define __CFLOAT64X _Complex long double
+# else
+# define __CFLOAT64X __CFLOAT128
+# endif
+# else
+# define __CFLOAT64X _Complex _Float64x
+# endif
+# endif
+
+# if __HAVE_FLOAT128X
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# error "_Float128X supported but no complex type"
+# else
+# define __CFLOAT128X _Complex _Float128x
+# endif
+# endif
+
+/* The remaining of this file provides support for older compilers. */
+# if __HAVE_FLOAT16
+
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef float _Float16 __attribute__ ((__mode__ (__HF__)));
+# endif
+
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf16() ((_Float16) __builtin_huge_val ())
+# define __builtin_inff16() ((_Float16) __builtin_inf ())
+# define __builtin_nanf16(x) ((_Float16) __builtin_nan (x))
+# define __builtin_nansf16(x) ((_Float16) __builtin_nans (x))
+# endif
+
+# endif
+
+# if __HAVE_FLOAT32
+
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef float _Float32;
+# endif
+
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf32() (__builtin_huge_valf ())
+# define __builtin_inff32() (__builtin_inff ())
+# define __builtin_nanf32(x) (__builtin_nanf (x))
+# define __builtin_nansf32(x) (__builtin_nansf (x))
+# endif
+
+# endif
+
+# if __HAVE_FLOAT64
+
+/* If double, long double and _Float64 all have the same set of
+ values, TS 18661-3 requires the usual arithmetic conversions on
+ long double and _Float64 to produce _Float64. For this to be the
+ case when building with a compiler without a distinct _Float64
+ type, _Float64 must be a typedef for long double, not for
+ double. */
+
+# ifdef __NO_LONG_DOUBLE_MATH
+
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef long double _Float64;
+# endif
+
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf64() (__builtin_huge_vall ())
+# define __builtin_inff64() (__builtin_infl ())
+# define __builtin_nanf64(x) (__builtin_nanl (x))
+# define __builtin_nansf64(x) (__builtin_nansl (x))
+# endif
+
+# else
+
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef double _Float64;
+# endif
+
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf64() (__builtin_huge_val ())
+# define __builtin_inff64() (__builtin_inf ())
+# define __builtin_nanf64(x) (__builtin_nan (x))
+# define __builtin_nansf64(x) (__builtin_nans (x))
+# endif
+
+# endif
+
+# endif
+
+# if __HAVE_FLOAT32X
+
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef double _Float32x;
+# endif
+
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf32x() (__builtin_huge_val ())
+# define __builtin_inff32x() (__builtin_inf ())
+# define __builtin_nanf32x(x) (__builtin_nan (x))
+# define __builtin_nansf32x(x) (__builtin_nans (x))
+# endif
+
+# endif
+
+# if __HAVE_FLOAT64X
+
+# if __HAVE_FLOAT64X_LONG_DOUBLE
+
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef long double _Float64x;
+# endif
+
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf64x() (__builtin_huge_vall ())
+# define __builtin_inff64x() (__builtin_infl ())
+# define __builtin_nanf64x(x) (__builtin_nanl (x))
+# define __builtin_nansf64x(x) (__builtin_nansl (x))
+# endif
+
+# else
+
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef _Float128 _Float64x;
+# endif
+
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf64x() (__builtin_huge_valf128 ())
+# define __builtin_inff64x() (__builtin_inff128 ())
+# define __builtin_nanf64x(x) (__builtin_nanf128 (x))
+# define __builtin_nansf64x(x) (__builtin_nansf128 (x))
+# endif
+
+# endif
+
+# endif
+
+# if __HAVE_FLOAT128X
+
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+# error "_Float128x supported but no type"
+# endif
+
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf128x() ((_Float128x) __builtin_huge_val ())
+# define __builtin_inff128x() ((_Float128x) __builtin_inf ())
+# define __builtin_nanf128x(x) ((_Float128x) __builtin_nan (x))
+# define __builtin_nansf128x(x) ((_Float128x) __builtin_nans (x))
+# endif
+
+# endif
+
+#endif /* !__ASSEMBLER__. */
+
+#endif /* _BITS_FLOATN_COMMON_H */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn-common.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn-common.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn.h
new file mode 100644
index 0000000..d157c92
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn.h
@@ -0,0 +1,121 @@
+/* Macros to control TS 18661-3 glibc features on x86.
+ Copyright (C) 2017-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_FLOATN_H
+#define _BITS_FLOATN_H
+
+#include
+
+/* Defined to 1 if the current compiler invocation provides a
+ floating-point type with the IEEE 754 binary128 format, and this
+ glibc includes corresponding *f128 interfaces for it. The required
+ libgcc support was added some time after the basic compiler
+ support, for x86_64 and x86. */
+#if (defined __x86_64__ \
+ ? __GNUC_PREREQ (4, 3) \
+ : (defined __GNU__ ? __GNUC_PREREQ (4, 5) : __GNUC_PREREQ (4, 4)))
+# define __HAVE_FLOAT128 1
+#else
+# define __HAVE_FLOAT128 0
+#endif
+
+/* Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct
+ from the default float, double and long double types in this glibc. */
+#if __HAVE_FLOAT128
+# define __HAVE_DISTINCT_FLOAT128 1
+#else
+# define __HAVE_DISTINCT_FLOAT128 0
+#endif
+
+/* Defined to 1 if the current compiler invocation provides a
+ floating-point type with the right format for _Float64x, and this
+ glibc includes corresponding *f64x interfaces for it. */
+#define __HAVE_FLOAT64X 1
+
+/* Defined to 1 if __HAVE_FLOAT64X is 1 and _Float64x has the format
+ of long double. Otherwise, if __HAVE_FLOAT64X is 1, _Float64x has
+ the format of _Float128, which must be different from that of long
+ double. */
+#define __HAVE_FLOAT64X_LONG_DOUBLE 1
+
+#ifndef __ASSEMBLER__
+
+/* Defined to concatenate the literal suffix to be used with _Float128
+ types, if __HAVE_FLOAT128 is 1. */
+# if __HAVE_FLOAT128
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+/* The literal suffix f128 exists only since GCC 7.0. */
+# define __f128(x) x##q
+# else
+# define __f128(x) x##f128
+# endif
+# endif
+
+/* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */
+# if __HAVE_FLOAT128
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+/* Add a typedef for older GCC compilers which don't natively support
+ _Complex _Float128. */
+typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__TC__)));
+# define __CFLOAT128 __cfloat128
+# else
+# define __CFLOAT128 _Complex _Float128
+# endif
+# endif
+
+/* The remaining of this file provides support for older compilers. */
+# if __HAVE_FLOAT128
+
+/* The type _Float128 exists only since GCC 7.0. */
+# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
+typedef __float128 _Float128;
+# endif
+
+/* __builtin_huge_valf128 doesn't exist before GCC 7.0. */
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ())
+# endif
+
+/* Older GCC has only a subset of built-in functions for _Float128 on
+ x86, and __builtin_infq is not usable in static initializers.
+ Converting a narrower sNaN to _Float128 produces a quiet NaN, so
+ attempts to use _Float128 sNaNs will not work properly with older
+ compilers. */
+# if !__GNUC_PREREQ (7, 0)
+# define __builtin_copysignf128 __builtin_copysignq
+# define __builtin_fabsf128 __builtin_fabsq
+# define __builtin_inff128() ((_Float128) __builtin_inf ())
+# define __builtin_nanf128(x) ((_Float128) __builtin_nan (x))
+# define __builtin_nansf128(x) ((_Float128) __builtin_nans (x))
+# endif
+
+/* In math/math.h, __MATH_TG will expand signbit to __builtin_signbit*,
+ e.g.: __builtin_signbitf128, before GCC 6. However, there has never
+ been a __builtin_signbitf128 in GCC and the type-generic builtin is
+ only available since GCC 6. */
+# if !__GNUC_PREREQ (6, 0)
+# define __builtin_signbitf128 __signbitf128
+# endif
+
+# endif
+
+#endif /* !__ASSEMBLER__. */
+
+#include
+
+#endif /* _BITS_FLOATN_H */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@floatn.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@libc-header-start.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@libc-header-start.h
new file mode 100644
index 0000000..72efab2
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@libc-header-start.h
@@ -0,0 +1,70 @@
+/* Handle feature test macros at the start of a header.
+ Copyright (C) 2016-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+/* This header is internal to glibc and should not be included outside
+ of glibc headers. Headers including it must define
+ __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION first. This header
+ cannot have multiple include guards because ISO C feature test
+ macros depend on the definition of the macro when an affected
+ header is included, not when the first system header is
+ included. */
+
+#ifndef __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
+# error "Never include directly."
+#endif
+
+#undef __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION
+
+#include
+
+/* ISO/IEC TR 24731-2:2010 defines the __STDC_WANT_LIB_EXT2__
+ macro. */
+#undef __GLIBC_USE_LIB_EXT2
+#if (defined __USE_GNU \
+ || (defined __STDC_WANT_LIB_EXT2__ && __STDC_WANT_LIB_EXT2__ > 0))
+# define __GLIBC_USE_LIB_EXT2 1
+#else
+# define __GLIBC_USE_LIB_EXT2 0
+#endif
+
+/* ISO/IEC TS 18661-1:2014 defines the __STDC_WANT_IEC_60559_BFP_EXT__
+ macro. */
+#undef __GLIBC_USE_IEC_60559_BFP_EXT
+#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_BFP_EXT__
+# define __GLIBC_USE_IEC_60559_BFP_EXT 1
+#else
+# define __GLIBC_USE_IEC_60559_BFP_EXT 0
+#endif
+
+/* ISO/IEC TS 18661-4:2015 defines the
+ __STDC_WANT_IEC_60559_FUNCS_EXT__ macro. */
+#undef __GLIBC_USE_IEC_60559_FUNCS_EXT
+#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_FUNCS_EXT__
+# define __GLIBC_USE_IEC_60559_FUNCS_EXT 1
+#else
+# define __GLIBC_USE_IEC_60559_FUNCS_EXT 0
+#endif
+
+/* ISO/IEC TS 18661-3:2015 defines the
+ __STDC_WANT_IEC_60559_TYPES_EXT__ macro. */
+#undef __GLIBC_USE_IEC_60559_TYPES_EXT
+#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_TYPES_EXT__
+# define __GLIBC_USE_IEC_60559_TYPES_EXT 1
+#else
+# define __GLIBC_USE_IEC_60559_TYPES_EXT 0
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@long-double.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@long-double.h
new file mode 100644
index 0000000..8d60650
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@long-double.h
@@ -0,0 +1,20 @@
+/* Properties of long double type. ldbl-96 version.
+ Copyright (C) 2016-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+/* long double is distinct from double, so there is nothing to
+ define here. */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@long-double.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@long-double.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@pthreadtypes-arch.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@pthreadtypes-arch.h
new file mode 100644
index 0000000..4eac75b
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@pthreadtypes-arch.h
@@ -0,0 +1,106 @@
+/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_PTHREADTYPES_ARCH_H
+#define _BITS_PTHREADTYPES_ARCH_H 1
+
+#include
+
+#ifdef __x86_64__
+# if __WORDSIZE == 64
+# define __SIZEOF_PTHREAD_MUTEX_T 40
+# define __SIZEOF_PTHREAD_ATTR_T 56
+# define __SIZEOF_PTHREAD_MUTEX_T 40
+# define __SIZEOF_PTHREAD_RWLOCK_T 56
+# define __SIZEOF_PTHREAD_BARRIER_T 32
+# else
+# define __SIZEOF_PTHREAD_MUTEX_T 32
+# define __SIZEOF_PTHREAD_ATTR_T 32
+# define __SIZEOF_PTHREAD_MUTEX_T 32
+# define __SIZEOF_PTHREAD_RWLOCK_T 44
+# define __SIZEOF_PTHREAD_BARRIER_T 20
+# endif
+#else
+# define __SIZEOF_PTHREAD_MUTEX_T 24
+# define __SIZEOF_PTHREAD_ATTR_T 36
+# define __SIZEOF_PTHREAD_MUTEX_T 24
+# define __SIZEOF_PTHREAD_RWLOCK_T 32
+# define __SIZEOF_PTHREAD_BARRIER_T 20
+#endif
+#define __SIZEOF_PTHREAD_MUTEXATTR_T 4
+#define __SIZEOF_PTHREAD_COND_T 48
+#define __SIZEOF_PTHREAD_CONDATTR_T 4
+#define __SIZEOF_PTHREAD_RWLOCKATTR_T 8
+#define __SIZEOF_PTHREAD_BARRIERATTR_T 4
+
+/* Definitions for internal mutex struct. */
+#define __PTHREAD_COMPAT_PADDING_MID
+#define __PTHREAD_COMPAT_PADDING_END
+#define __PTHREAD_MUTEX_LOCK_ELISION 1
+#ifdef __x86_64__
+# define __PTHREAD_MUTEX_NUSERS_AFTER_KIND 0
+# define __PTHREAD_MUTEX_USE_UNION 0
+#else
+# define __PTHREAD_MUTEX_NUSERS_AFTER_KIND 1
+# define __PTHREAD_MUTEX_USE_UNION 1
+#endif
+
+#define __LOCK_ALIGNMENT
+#define __ONCE_ALIGNMENT
+
+struct __pthread_rwlock_arch_t
+{
+ unsigned int __readers;
+ unsigned int __writers;
+ unsigned int __wrphase_futex;
+ unsigned int __writers_futex;
+ unsigned int __pad3;
+ unsigned int __pad4;
+#ifdef __x86_64__
+ int __cur_writer;
+ int __shared;
+ signed char __rwelision;
+# ifdef __ILP32__
+ unsigned char __pad1[3];
+# define __PTHREAD_RWLOCK_ELISION_EXTRA 0, { 0, 0, 0 }
+# else
+ unsigned char __pad1[7];
+# define __PTHREAD_RWLOCK_ELISION_EXTRA 0, { 0, 0, 0, 0, 0, 0, 0 }
+# endif
+ unsigned long int __pad2;
+ /* FLAGS must stay at this position in the structure to maintain
+ binary compatibility. */
+ unsigned int __flags;
+# define __PTHREAD_RWLOCK_INT_FLAGS_SHARED 1
+#else
+ /* FLAGS must stay at this position in the structure to maintain
+ binary compatibility. */
+ unsigned char __flags;
+ unsigned char __shared;
+ signed char __rwelision;
+# define __PTHREAD_RWLOCK_ELISION_EXTRA 0
+ unsigned char __pad2;
+ int __cur_writer;
+#endif
+};
+
+#ifndef __x86_64__
+/* Extra attributes for the cleanup functions. */
+# define __cleanup_fct_attribute __attribute__ ((__regparm__ (1)))
+#endif
+
+#endif /* bits/pthreadtypes.h */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@pthreadtypes-arch.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@pthreadtypes-arch.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@pthreadtypes.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@pthreadtypes.h
new file mode 100644
index 0000000..1b2a174
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@pthreadtypes.h
@@ -0,0 +1,121 @@
+/* Declaration of common pthread types for all architectures.
+ Copyright (C) 2017-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_PTHREADTYPES_COMMON_H
+# define _BITS_PTHREADTYPES_COMMON_H 1
+
+/* For internal mutex and condition variable definitions. */
+#include
+
+/* Thread identifiers. The structure of the attribute type is not
+ exposed on purpose. */
+typedef unsigned long int pthread_t;
+
+
+/* Data structures for mutex handling. The structure of the attribute
+ type is not exposed on purpose. */
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_MUTEXATTR_T];
+ int __align;
+} pthread_mutexattr_t;
+
+
+/* Data structure for condition variable handling. The structure of
+ the attribute type is not exposed on purpose. */
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_CONDATTR_T];
+ int __align;
+} pthread_condattr_t;
+
+
+/* Keys for thread-specific data */
+typedef unsigned int pthread_key_t;
+
+
+/* Once-only execution */
+typedef int __ONCE_ALIGNMENT pthread_once_t;
+
+
+union pthread_attr_t
+{
+ char __size[__SIZEOF_PTHREAD_ATTR_T];
+ long int __align;
+};
+#ifndef __have_pthread_attr_t
+typedef union pthread_attr_t pthread_attr_t;
+# define __have_pthread_attr_t 1
+#endif
+
+
+typedef union
+{
+ struct __pthread_mutex_s __data;
+ char __size[__SIZEOF_PTHREAD_MUTEX_T];
+ long int __align;
+} pthread_mutex_t;
+
+
+typedef union
+{
+ struct __pthread_cond_s __data;
+ char __size[__SIZEOF_PTHREAD_COND_T];
+ __extension__ long long int __align;
+} pthread_cond_t;
+
+
+#if defined __USE_UNIX98 || defined __USE_XOPEN2K
+/* Data structure for reader-writer lock variable handling. The
+ structure of the attribute type is deliberately not exposed. */
+typedef union
+{
+ struct __pthread_rwlock_arch_t __data;
+ char __size[__SIZEOF_PTHREAD_RWLOCK_T];
+ long int __align;
+} pthread_rwlock_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_RWLOCKATTR_T];
+ long int __align;
+} pthread_rwlockattr_t;
+#endif
+
+
+#ifdef __USE_XOPEN2K
+/* POSIX spinlock data type. */
+typedef volatile int pthread_spinlock_t;
+
+
+/* POSIX barriers data type. The structure of the type is
+ deliberately not exposed. */
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_BARRIER_T];
+ long int __align;
+} pthread_barrier_t;
+
+typedef union
+{
+ char __size[__SIZEOF_PTHREAD_BARRIERATTR_T];
+ int __align;
+} pthread_barrierattr_t;
+#endif
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@select.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@select.h
new file mode 100644
index 0000000..1da802a
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@select.h
@@ -0,0 +1,63 @@
+/* Copyright (C) 1997-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _SYS_SELECT_H
+# error "Never use directly; include instead."
+#endif
+
+#include
+
+
+#if defined __GNUC__ && __GNUC__ >= 2
+
+# if __WORDSIZE == 64
+# define __FD_ZERO_STOS "stosq"
+# else
+# define __FD_ZERO_STOS "stosl"
+# endif
+
+# define __FD_ZERO(fdsp) \
+ do { \
+ int __d0, __d1; \
+ __asm__ __volatile__ ("cld; rep; " __FD_ZERO_STOS \
+ : "=c" (__d0), "=D" (__d1) \
+ : "a" (0), "0" (sizeof (fd_set) \
+ / sizeof (__fd_mask)), \
+ "1" (&__FDS_BITS (fdsp)[0]) \
+ : "memory"); \
+ } while (0)
+
+#else /* ! GNU CC */
+
+/* We don't use `memset' because this would require a prototype and
+ the array isn't too big. */
+# define __FD_ZERO(set) \
+ do { \
+ unsigned int __i; \
+ fd_set *__arr = (set); \
+ for (__i = 0; __i < sizeof (fd_set) / sizeof (__fd_mask); ++__i) \
+ __FDS_BITS (__arr)[__i] = 0; \
+ } while (0)
+
+#endif /* GNU CC */
+
+#define __FD_SET(d, set) \
+ ((void) (__FDS_BITS (set)[__FD_ELT (d)] |= __FD_MASK (d)))
+#define __FD_CLR(d, set) \
+ ((void) (__FDS_BITS (set)[__FD_ELT (d)] &= ~__FD_MASK (d)))
+#define __FD_ISSET(d, set) \
+ ((__FDS_BITS (set)[__FD_ELT (d)] & __FD_MASK (d)) != 0)
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@select.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@select.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@stdint-intn.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@stdint-intn.h
new file mode 100644
index 0000000..fc7b43f
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@stdint-intn.h
@@ -0,0 +1,29 @@
+/* Define intN_t types.
+ Copyright (C) 2017-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_STDINT_INTN_H
+#define _BITS_STDINT_INTN_H 1
+
+#include
+
+typedef __int8_t int8_t;
+typedef __int16_t int16_t;
+typedef __int32_t int32_t;
+typedef __int64_t int64_t;
+
+#endif /* bits/stdint-intn.h */
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@stdio_lim.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@stdio_lim.h
new file mode 100644
index 0000000..f2e3601
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@stdio_lim.h
@@ -0,0 +1,39 @@
+/* Copyright (C) 1994-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_STDIO_LIM_H
+#define _BITS_STDIO_LIM_H 1
+
+#ifndef _STDIO_H
+# error "Never include directly; use instead."
+#endif
+
+#define L_tmpnam 20
+#define TMP_MAX 238328
+#define FILENAME_MAX 4096
+
+#ifdef __USE_POSIX
+# define L_ctermid 9
+# if !defined __USE_XOPEN2K || defined __USE_GNU
+# define L_cuserid 9
+# endif
+#endif
+
+#undef FOPEN_MAX
+#define FOPEN_MAX 16
+
+#endif /* bits/stdio_lim.h */
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@stdlib-float.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@stdlib-float.h
new file mode 100644
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--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@stdlib-float.h
@@ -0,0 +1,29 @@
+/* Floating-point inline functions for stdlib.h.
+ Copyright (C) 2012-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _STDLIB_H
+# error "Never use directly; include instead."
+#endif
+
+#ifdef __USE_EXTERN_INLINES
+__extern_inline double
+__NTH (atof (const char *__nptr))
+{
+ return strtod (__nptr, (char **) NULL);
+}
+#endif /* Optimizing and Inlining. */
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@sys_errlist.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@sys_errlist.h
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index 0000000..0311b73
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@sys_errlist.h
@@ -0,0 +1,32 @@
+/* Declare sys_errlist and sys_nerr, or don't. Compatibility (do) version.
+ Copyright (C) 2002-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _STDIO_H
+# error "Never include directly; use instead."
+#endif
+
+/* sys_errlist and sys_nerr are deprecated. Use strerror instead. */
+
+#ifdef __USE_MISC
+extern int sys_nerr;
+extern const char *const sys_errlist[];
+#endif
+#ifdef __USE_GNU
+extern int _sys_nerr;
+extern const char *const _sys_errlist[];
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@thread-shared-types.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@thread-shared-types.h
new file mode 100644
index 0000000..aec0a12
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@thread-shared-types.h
@@ -0,0 +1,198 @@
+/* Common threading primitives definitions for both POSIX and C11.
+ Copyright (C) 2017-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _THREAD_SHARED_TYPES_H
+#define _THREAD_SHARED_TYPES_H 1
+
+/* Arch-specific definitions. Each architecture must define the following
+ macros to define the expected sizes of pthread data types:
+
+ __SIZEOF_PTHREAD_ATTR_T - size of pthread_attr_t.
+ __SIZEOF_PTHREAD_MUTEX_T - size of pthread_mutex_t.
+ __SIZEOF_PTHREAD_MUTEXATTR_T - size of pthread_mutexattr_t.
+ __SIZEOF_PTHREAD_COND_T - size of pthread_cond_t.
+ __SIZEOF_PTHREAD_CONDATTR_T - size of pthread_condattr_t.
+ __SIZEOF_PTHREAD_RWLOCK_T - size of pthread_rwlock_t.
+ __SIZEOF_PTHREAD_RWLOCKATTR_T - size of pthread_rwlockattr_t.
+ __SIZEOF_PTHREAD_BARRIER_T - size of pthread_barrier_t.
+ __SIZEOF_PTHREAD_BARRIERATTR_T - size of pthread_barrierattr_t.
+
+ Also, the following macros must be define for internal pthread_mutex_t
+ struct definitions (struct __pthread_mutex_s):
+
+ __PTHREAD_COMPAT_PADDING_MID - any additional members after 'kind'
+ and before '__spin' (for 64 bits) or
+ '__nusers' (for 32 bits).
+ __PTHREAD_COMPAT_PADDING_END - any additional members at the end of
+ the internal structure.
+ __PTHREAD_MUTEX_LOCK_ELISION - 1 if the architecture supports lock
+ elision or 0 otherwise.
+ __PTHREAD_MUTEX_NUSERS_AFTER_KIND - control where to put __nusers. The
+ preferred value for new architectures
+ is 0.
+ __PTHREAD_MUTEX_USE_UNION - control whether internal __spins and
+ __list will be place inside a union for
+ linuxthreads compatibility.
+ The preferred value for new architectures
+ is 0.
+
+ For a new port the preferred values for the required defines are:
+
+ #define __PTHREAD_COMPAT_PADDING_MID
+ #define __PTHREAD_COMPAT_PADDING_END
+ #define __PTHREAD_MUTEX_LOCK_ELISION 0
+ #define __PTHREAD_MUTEX_NUSERS_AFTER_KIND 0
+ #define __PTHREAD_MUTEX_USE_UNION 0
+
+ __PTHREAD_MUTEX_LOCK_ELISION can be set to 1 if the hardware plans to
+ eventually support lock elision using transactional memory.
+
+ The additional macro defines any constraint for the lock alignment
+ inside the thread structures:
+
+ __LOCK_ALIGNMENT - for internal lock/futex usage.
+
+ Same idea but for the once locking primitive:
+
+ __ONCE_ALIGNMENT - for pthread_once_t/once_flag definition.
+
+ And finally the internal pthread_rwlock_t (struct __pthread_rwlock_arch_t)
+ must be defined.
+ */
+#include
+
+/* Common definition of pthread_mutex_t. */
+
+#if !__PTHREAD_MUTEX_USE_UNION
+typedef struct __pthread_internal_list
+{
+ struct __pthread_internal_list *__prev;
+ struct __pthread_internal_list *__next;
+} __pthread_list_t;
+#else
+typedef struct __pthread_internal_slist
+{
+ struct __pthread_internal_slist *__next;
+} __pthread_slist_t;
+#endif
+
+/* Lock elision support. */
+#if __PTHREAD_MUTEX_LOCK_ELISION
+# if !__PTHREAD_MUTEX_USE_UNION
+# define __PTHREAD_SPINS_DATA \
+ short __spins; \
+ short __elision
+# define __PTHREAD_SPINS 0, 0
+# else
+# define __PTHREAD_SPINS_DATA \
+ struct \
+ { \
+ short __espins; \
+ short __eelision; \
+ } __elision_data
+# define __PTHREAD_SPINS { 0, 0 }
+# define __spins __elision_data.__espins
+# define __elision __elision_data.__eelision
+# endif
+#else
+# define __PTHREAD_SPINS_DATA int __spins
+/* Mutex __spins initializer used by PTHREAD_MUTEX_INITIALIZER. */
+# define __PTHREAD_SPINS 0
+#endif
+
+struct __pthread_mutex_s
+{
+ int __lock __LOCK_ALIGNMENT;
+ unsigned int __count;
+ int __owner;
+#if !__PTHREAD_MUTEX_NUSERS_AFTER_KIND
+ unsigned int __nusers;
+#endif
+ /* KIND must stay at this position in the structure to maintain
+ binary compatibility with static initializers.
+
+ Concurrency notes:
+ The __kind of a mutex is initialized either by the static
+ PTHREAD_MUTEX_INITIALIZER or by a call to pthread_mutex_init.
+
+ After a mutex has been initialized, the __kind of a mutex is usually not
+ changed. BUT it can be set to -1 in pthread_mutex_destroy or elision can
+ be enabled. This is done concurrently in the pthread_mutex_*lock functions
+ by using the macro FORCE_ELISION. This macro is only defined for
+ architectures which supports lock elision.
+
+ For elision, there are the flags PTHREAD_MUTEX_ELISION_NP and
+ PTHREAD_MUTEX_NO_ELISION_NP which can be set in addition to the already set
+ type of a mutex.
+ Before a mutex is initialized, only PTHREAD_MUTEX_NO_ELISION_NP can be set
+ with pthread_mutexattr_settype.
+ After a mutex has been initialized, the functions pthread_mutex_*lock can
+ enable elision - if the mutex-type and the machine supports it - by setting
+ the flag PTHREAD_MUTEX_ELISION_NP. This is done concurrently. Afterwards
+ the lock / unlock functions are using specific elision code-paths. */
+ int __kind;
+ __PTHREAD_COMPAT_PADDING_MID
+#if __PTHREAD_MUTEX_NUSERS_AFTER_KIND
+ unsigned int __nusers;
+#endif
+#if !__PTHREAD_MUTEX_USE_UNION
+ __PTHREAD_SPINS_DATA;
+ __pthread_list_t __list;
+# define __PTHREAD_MUTEX_HAVE_PREV 1
+#else
+ __extension__ union
+ {
+ __PTHREAD_SPINS_DATA;
+ __pthread_slist_t __list;
+ };
+# define __PTHREAD_MUTEX_HAVE_PREV 0
+#endif
+ __PTHREAD_COMPAT_PADDING_END
+};
+
+
+/* Common definition of pthread_cond_t. */
+
+struct __pthread_cond_s
+{
+ __extension__ union
+ {
+ __extension__ unsigned long long int __wseq;
+ struct
+ {
+ unsigned int __low;
+ unsigned int __high;
+ } __wseq32;
+ };
+ __extension__ union
+ {
+ __extension__ unsigned long long int __g1_start;
+ struct
+ {
+ unsigned int __low;
+ unsigned int __high;
+ } __g1_start32;
+ };
+ unsigned int __g_refs[2] __LOCK_ALIGNMENT;
+ unsigned int __g_size[2];
+ unsigned int __g1_orig_size;
+ unsigned int __wrefs;
+ unsigned int __g_signals[2];
+};
+
+#endif /* _THREAD_SHARED_TYPES_H */
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@time64.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@time64.h
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+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@time64.h
@@ -0,0 +1,36 @@
+/* bits/time64.h -- underlying types for __time64_t. Generic version.
+ Copyright (C) 2018-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_TYPES_H
+# error "Never include directly; use instead."
+#endif
+
+#ifndef _BITS_TIME64_H
+#define _BITS_TIME64_H 1
+
+/* Define __TIME64_T_TYPE so that it is always a 64-bit type. */
+
+#if __TIMESIZE == 64
+/* If we already have 64-bit time type then use it. */
+# define __TIME64_T_TYPE __TIME_T_TYPE
+#else
+/* Define a 64-bit time type alongsize the 32-bit one. */
+# define __TIME64_T_TYPE __SQUAD_TYPE
+#endif
+
+#endif /* bits/time64.h */
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index 0000000..81ca67f
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@timesize.h
@@ -0,0 +1,25 @@
+/* Bit size of the time_t type at glibc build time, x86-64 and x32 case.
+ Copyright (C) 2018-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#if defined __x86_64__ && defined __ILP32__
+/* For x32, time is 64-bit even though word size is 32-bit. */
+# define __TIMESIZE 64
+#else
+/* For others, time size is word size. */
+# define __TIMESIZE __WORDSIZE
+#endif
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index 0000000..0de6c59
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types.h
@@ -0,0 +1,224 @@
+/* bits/types.h -- definitions of __*_t types underlying *_t types.
+ Copyright (C) 2002-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+/*
+ * Never include this file directly; use instead.
+ */
+
+#ifndef _BITS_TYPES_H
+#define _BITS_TYPES_H 1
+
+#include
+#include
+#include
+
+/* Convenience types. */
+typedef unsigned char __u_char;
+typedef unsigned short int __u_short;
+typedef unsigned int __u_int;
+typedef unsigned long int __u_long;
+
+/* Fixed-size types, underlying types depend on word size and compiler. */
+typedef signed char __int8_t;
+typedef unsigned char __uint8_t;
+typedef signed short int __int16_t;
+typedef unsigned short int __uint16_t;
+typedef signed int __int32_t;
+typedef unsigned int __uint32_t;
+#if __WORDSIZE == 64
+typedef signed long int __int64_t;
+typedef unsigned long int __uint64_t;
+#else
+__extension__ typedef signed long long int __int64_t;
+__extension__ typedef unsigned long long int __uint64_t;
+#endif
+
+/* Smallest types with at least a given width. */
+typedef __int8_t __int_least8_t;
+typedef __uint8_t __uint_least8_t;
+typedef __int16_t __int_least16_t;
+typedef __uint16_t __uint_least16_t;
+typedef __int32_t __int_least32_t;
+typedef __uint32_t __uint_least32_t;
+typedef __int64_t __int_least64_t;
+typedef __uint64_t __uint_least64_t;
+
+/* quad_t is also 64 bits. */
+#if __WORDSIZE == 64
+typedef long int __quad_t;
+typedef unsigned long int __u_quad_t;
+#else
+__extension__ typedef long long int __quad_t;
+__extension__ typedef unsigned long long int __u_quad_t;
+#endif
+
+/* Largest integral types. */
+#if __WORDSIZE == 64
+typedef long int __intmax_t;
+typedef unsigned long int __uintmax_t;
+#else
+__extension__ typedef long long int __intmax_t;
+__extension__ typedef unsigned long long int __uintmax_t;
+#endif
+
+
+/* The machine-dependent file defines __*_T_TYPE
+ macros for each of the OS types we define below. The definitions
+ of those macros must use the following macros for underlying types.
+ We define __S_TYPE and __U_TYPE for the signed and unsigned
+ variants of each of the following integer types on this machine.
+
+ 16 -- "natural" 16-bit type (always short)
+ 32 -- "natural" 32-bit type (always int)
+ 64 -- "natural" 64-bit type (long or long long)
+ LONG32 -- 32-bit type, traditionally long
+ QUAD -- 64-bit type, traditionally long long
+ WORD -- natural type of __WORDSIZE bits (int or long)
+ LONGWORD -- type of __WORDSIZE bits, traditionally long
+
+ We distinguish WORD/LONGWORD, 32/LONG32, and 64/QUAD so that the
+ conventional uses of `long' or `long long' type modifiers match the
+ types we define, even when a less-adorned type would be the same size.
+ This matters for (somewhat) portably writing printf/scanf formats for
+ these types, where using the appropriate l or ll format modifiers can
+ make the typedefs and the formats match up across all GNU platforms. If
+ we used `long' when it's 64 bits where `long long' is expected, then the
+ compiler would warn about the formats not matching the argument types,
+ and the programmer changing them to shut up the compiler would break the
+ program's portability.
+
+ Here we assume what is presently the case in all the GCC configurations
+ we support: long long is always 64 bits, long is always word/address size,
+ and int is always 32 bits. */
+
+#define __S16_TYPE short int
+#define __U16_TYPE unsigned short int
+#define __S32_TYPE int
+#define __U32_TYPE unsigned int
+#define __SLONGWORD_TYPE long int
+#define __ULONGWORD_TYPE unsigned long int
+#if __WORDSIZE == 32
+# define __SQUAD_TYPE __int64_t
+# define __UQUAD_TYPE __uint64_t
+# define __SWORD_TYPE int
+# define __UWORD_TYPE unsigned int
+# define __SLONG32_TYPE long int
+# define __ULONG32_TYPE unsigned long int
+# define __S64_TYPE __int64_t
+# define __U64_TYPE __uint64_t
+/* We want __extension__ before typedef's that use nonstandard base types
+ such as `long long' in C89 mode. */
+# define __STD_TYPE __extension__ typedef
+#elif __WORDSIZE == 64
+# define __SQUAD_TYPE long int
+# define __UQUAD_TYPE unsigned long int
+# define __SWORD_TYPE long int
+# define __UWORD_TYPE unsigned long int
+# define __SLONG32_TYPE int
+# define __ULONG32_TYPE unsigned int
+# define __S64_TYPE long int
+# define __U64_TYPE unsigned long int
+/* No need to mark the typedef with __extension__. */
+# define __STD_TYPE typedef
+#else
+# error
+#endif
+#include /* Defines __*_T_TYPE macros. */
+#include /* Defines __TIME*_T_TYPE macros. */
+
+
+__STD_TYPE __DEV_T_TYPE __dev_t; /* Type of device numbers. */
+__STD_TYPE __UID_T_TYPE __uid_t; /* Type of user identifications. */
+__STD_TYPE __GID_T_TYPE __gid_t; /* Type of group identifications. */
+__STD_TYPE __INO_T_TYPE __ino_t; /* Type of file serial numbers. */
+__STD_TYPE __INO64_T_TYPE __ino64_t; /* Type of file serial numbers (LFS).*/
+__STD_TYPE __MODE_T_TYPE __mode_t; /* Type of file attribute bitmasks. */
+__STD_TYPE __NLINK_T_TYPE __nlink_t; /* Type of file link counts. */
+__STD_TYPE __OFF_T_TYPE __off_t; /* Type of file sizes and offsets. */
+__STD_TYPE __OFF64_T_TYPE __off64_t; /* Type of file sizes and offsets (LFS). */
+__STD_TYPE __PID_T_TYPE __pid_t; /* Type of process identifications. */
+__STD_TYPE __FSID_T_TYPE __fsid_t; /* Type of file system IDs. */
+__STD_TYPE __CLOCK_T_TYPE __clock_t; /* Type of CPU usage counts. */
+__STD_TYPE __RLIM_T_TYPE __rlim_t; /* Type for resource measurement. */
+__STD_TYPE __RLIM64_T_TYPE __rlim64_t; /* Type for resource measurement (LFS). */
+__STD_TYPE __ID_T_TYPE __id_t; /* General type for IDs. */
+__STD_TYPE __TIME_T_TYPE __time_t; /* Seconds since the Epoch. */
+__STD_TYPE __USECONDS_T_TYPE __useconds_t; /* Count of microseconds. */
+__STD_TYPE __SUSECONDS_T_TYPE __suseconds_t; /* Signed count of microseconds. */
+
+__STD_TYPE __DADDR_T_TYPE __daddr_t; /* The type of a disk address. */
+__STD_TYPE __KEY_T_TYPE __key_t; /* Type of an IPC key. */
+
+/* Clock ID used in clock and timer functions. */
+__STD_TYPE __CLOCKID_T_TYPE __clockid_t;
+
+/* Timer ID returned by `timer_create'. */
+__STD_TYPE __TIMER_T_TYPE __timer_t;
+
+/* Type to represent block size. */
+__STD_TYPE __BLKSIZE_T_TYPE __blksize_t;
+
+/* Types from the Large File Support interface. */
+
+/* Type to count number of disk blocks. */
+__STD_TYPE __BLKCNT_T_TYPE __blkcnt_t;
+__STD_TYPE __BLKCNT64_T_TYPE __blkcnt64_t;
+
+/* Type to count file system blocks. */
+__STD_TYPE __FSBLKCNT_T_TYPE __fsblkcnt_t;
+__STD_TYPE __FSBLKCNT64_T_TYPE __fsblkcnt64_t;
+
+/* Type to count file system nodes. */
+__STD_TYPE __FSFILCNT_T_TYPE __fsfilcnt_t;
+__STD_TYPE __FSFILCNT64_T_TYPE __fsfilcnt64_t;
+
+/* Type of miscellaneous file system fields. */
+__STD_TYPE __FSWORD_T_TYPE __fsword_t;
+
+__STD_TYPE __SSIZE_T_TYPE __ssize_t; /* Type of a byte count, or error. */
+
+/* Signed long type used in system calls. */
+__STD_TYPE __SYSCALL_SLONG_TYPE __syscall_slong_t;
+/* Unsigned long type used in system calls. */
+__STD_TYPE __SYSCALL_ULONG_TYPE __syscall_ulong_t;
+
+/* These few don't really vary by system, they always correspond
+ to one of the other defined types. */
+typedef __off64_t __loff_t; /* Type of file sizes and offsets (LFS). */
+typedef char *__caddr_t;
+
+/* Duplicates info from stdint.h but this is used in unistd.h. */
+__STD_TYPE __SWORD_TYPE __intptr_t;
+
+/* Duplicate info from sys/socket.h. */
+__STD_TYPE __U32_TYPE __socklen_t;
+
+/* C99: An integer type that can be accessed as an atomic entity,
+ even in the presence of asynchronous interrupts.
+ It is not currently necessary for this to be machine-specific. */
+typedef int __sig_atomic_t;
+
+#if __TIMESIZE == 64
+# define __time64_t __time_t
+#else
+__STD_TYPE __TIME64_T_TYPE __time64_t; /* Seconds since the Epoch. */
+#endif
+
+#undef __STD_TYPE
+
+#endif /* bits/types.h */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@FILE.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@FILE.h
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index 0000000..f268263
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@FILE.h
@@ -0,0 +1,9 @@
+#ifndef __FILE_defined
+#define __FILE_defined 1
+
+struct _IO_FILE;
+
+/* The opaque type of streams. This is the definition used elsewhere. */
+typedef struct _IO_FILE FILE;
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__FILE.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__FILE.h
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index 0000000..06dd79b
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__FILE.h
@@ -0,0 +1,7 @@
+#ifndef ____FILE_defined
+#define ____FILE_defined 1
+
+struct _IO_FILE;
+typedef struct _IO_FILE __FILE;
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__fpos64_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__fpos64_t.h
new file mode 100644
index 0000000..06a6891
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__fpos64_t.h
@@ -0,0 +1,16 @@
+#ifndef _____fpos64_t_defined
+#define _____fpos64_t_defined 1
+
+#include
+#include
+
+/* The tag name of this struct is _G_fpos64_t to preserve historic
+ C++ mangled names for functions taking fpos_t and/or fpos64_t
+ arguments. That name should not be used in new code. */
+typedef struct _G_fpos64_t
+{
+ __off64_t __pos;
+ __mbstate_t __state;
+} __fpos64_t;
+
+#endif
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__fpos64_t.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__fpos64_t.h.blob
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new file mode 100644
index 0000000..bb04576
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__fpos_t.h
@@ -0,0 +1,16 @@
+#ifndef _____fpos_t_defined
+#define _____fpos_t_defined 1
+
+#include
+#include
+
+/* The tag name of this struct is _G_fpos_t to preserve historic
+ C++ mangled names for functions taking fpos_t arguments.
+ That name should not be used in new code. */
+typedef struct _G_fpos_t
+{
+ __off_t __pos;
+ __mbstate_t __state;
+} __fpos_t;
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__locale_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__locale_t.h
new file mode 100644
index 0000000..028dd05
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__locale_t.h
@@ -0,0 +1,44 @@
+/* Definition of struct __locale_struct and __locale_t.
+ Copyright (C) 1997-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper , 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_TYPES___LOCALE_T_H
+#define _BITS_TYPES___LOCALE_T_H 1
+
+/* POSIX.1-2008: the locale_t type, representing a locale context
+ (implementation-namespace version). This type should be treated
+ as opaque by applications; some details are exposed for the sake of
+ efficiency in e.g. ctype functions. */
+
+struct __locale_struct
+{
+ /* Note: LC_ALL is not a valid index into this array. */
+ struct __locale_data *__locales[13]; /* 13 = __LC_LAST. */
+
+ /* To increase the speed of this solution we add some special members. */
+ const unsigned short int *__ctype_b;
+ const int *__ctype_tolower;
+ const int *__ctype_toupper;
+
+ /* Note: LC_ALL is not a valid index into this array. */
+ const char *__names[13];
+};
+
+typedef struct __locale_struct *__locale_t;
+
+#endif /* bits/types/__locale_t.h */
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__mbstate_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__mbstate_t.h
new file mode 100644
index 0000000..1d8a4e2
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__mbstate_t.h
@@ -0,0 +1,23 @@
+#ifndef ____mbstate_t_defined
+#define ____mbstate_t_defined 1
+
+/* Integral type unchanged by default argument promotions that can
+ hold any value corresponding to members of the extended character
+ set, as well as at least one value that does not correspond to any
+ member of the extended character set. */
+#ifndef __WINT_TYPE__
+# define __WINT_TYPE__ unsigned int
+#endif
+
+/* Conversion state information. */
+typedef struct
+{
+ int __count;
+ union
+ {
+ __WINT_TYPE__ __wch;
+ char __wchb[4];
+ } __value; /* Value so far. */
+} __mbstate_t;
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__sigset_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__sigset_t.h
new file mode 100644
index 0000000..e2f18ac
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@__sigset_t.h
@@ -0,0 +1,10 @@
+#ifndef ____sigset_t_defined
+#define ____sigset_t_defined
+
+#define _SIGSET_NWORDS (1024 / (8 * sizeof (unsigned long int)))
+typedef struct
+{
+ unsigned long int __val[_SIGSET_NWORDS];
+} __sigset_t;
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@clock_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@clock_t.h
new file mode 100644
index 0000000..ce97248
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@clock_t.h
@@ -0,0 +1,9 @@
+#ifndef __clock_t_defined
+#define __clock_t_defined 1
+
+#include
+
+/* Returned by `clock'. */
+typedef __clock_t clock_t;
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@clockid_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@clockid_t.h
new file mode 100644
index 0000000..b17c7da
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+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@clockid_t.h
@@ -0,0 +1,9 @@
+#ifndef __clockid_t_defined
+#define __clockid_t_defined 1
+
+#include
+
+/* Clock ID used in clock and timer functions. */
+typedef __clockid_t clockid_t;
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@cookie_io_functions_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@cookie_io_functions_t.h
new file mode 100644
index 0000000..e3b6cd4
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@cookie_io_functions_t.h
@@ -0,0 +1,63 @@
+/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef __cookie_io_functions_t_defined
+#define __cookie_io_functions_t_defined 1
+
+#include
+
+/* Functions to do I/O and file management for a stream. */
+
+/* Read NBYTES bytes from COOKIE into a buffer pointed to by BUF.
+ Return number of bytes read. */
+typedef __ssize_t cookie_read_function_t (void *__cookie, char *__buf,
+ size_t __nbytes);
+
+/* Write NBYTES bytes pointed to by BUF to COOKIE. Write all NBYTES bytes
+ unless there is an error. Return number of bytes written. If
+ there is an error, return 0 and do not write anything. If the file
+ has been opened for append (__mode.__append set), then set the file
+ pointer to the end of the file and then do the write; if not, just
+ write at the current file pointer. */
+typedef __ssize_t cookie_write_function_t (void *__cookie, const char *__buf,
+ size_t __nbytes);
+
+/* Move COOKIE's file position to *POS bytes from the
+ beginning of the file (if W is SEEK_SET),
+ the current position (if W is SEEK_CUR),
+ or the end of the file (if W is SEEK_END).
+ Set *POS to the new file position.
+ Returns zero if successful, nonzero if not. */
+typedef int cookie_seek_function_t (void *__cookie, __off64_t *__pos, int __w);
+
+/* Close COOKIE. */
+typedef int cookie_close_function_t (void *__cookie);
+
+/* The structure with the cookie function pointers.
+ The tag name of this struct is _IO_cookie_io_functions_t to
+ preserve historic C++ mangled names for functions taking
+ cookie_io_functions_t arguments. That name should not be used in
+ new code. */
+typedef struct _IO_cookie_io_functions_t
+{
+ cookie_read_function_t *read; /* Read bytes. */
+ cookie_write_function_t *write; /* Write bytes. */
+ cookie_seek_function_t *seek; /* Seek/tell file position. */
+ cookie_close_function_t *close; /* Close file. */
+} cookie_io_functions_t;
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@locale_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@locale_t.h
new file mode 100644
index 0000000..fb1e14e
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@locale_t.h
@@ -0,0 +1,26 @@
+/* Definition of locale_t.
+ Copyright (C) 2017-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_TYPES_LOCALE_T_H
+#define _BITS_TYPES_LOCALE_T_H 1
+
+#include
+
+typedef __locale_t locale_t;
+
+#endif /* bits/types/locale_t.h */
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+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@sigset_t.h
@@ -0,0 +1,9 @@
+#ifndef __sigset_t_defined
+#define __sigset_t_defined 1
+
+#include
+
+/* A set of signals to be blocked, unblocked, or waited for. */
+typedef __sigset_t sigset_t;
+
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_FILE.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_FILE.h
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index 0000000..b725459
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_FILE.h
@@ -0,0 +1,120 @@
+/* Copyright (C) 1991-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef __struct_FILE_defined
+#define __struct_FILE_defined 1
+
+/* Caution: The contents of this file are not part of the official
+ stdio.h API. However, much of it is part of the official *binary*
+ interface, and therefore cannot be changed. */
+
+#if defined _IO_USE_OLD_IO_FILE && !defined _LIBC
+# error "_IO_USE_OLD_IO_FILE should only be defined when building libc itself"
+#endif
+
+#if defined _IO_lock_t_defined && !defined _LIBC
+# error "_IO_lock_t_defined should only be defined when building libc itself"
+#endif
+
+#include
+
+struct _IO_FILE;
+struct _IO_marker;
+struct _IO_codecvt;
+struct _IO_wide_data;
+
+/* During the build of glibc itself, _IO_lock_t will already have been
+ defined by internal headers. */
+#ifndef _IO_lock_t_defined
+typedef void _IO_lock_t;
+#endif
+
+/* The tag name of this struct is _IO_FILE to preserve historic
+ C++ mangled names for functions taking FILE* arguments.
+ That name should not be used in new code. */
+struct _IO_FILE
+{
+ int _flags; /* High-order word is _IO_MAGIC; rest is flags. */
+
+ /* The following pointers correspond to the C++ streambuf protocol. */
+ char *_IO_read_ptr; /* Current read pointer */
+ char *_IO_read_end; /* End of get area. */
+ char *_IO_read_base; /* Start of putback+get area. */
+ char *_IO_write_base; /* Start of put area. */
+ char *_IO_write_ptr; /* Current put pointer. */
+ char *_IO_write_end; /* End of put area. */
+ char *_IO_buf_base; /* Start of reserve area. */
+ char *_IO_buf_end; /* End of reserve area. */
+
+ /* The following fields are used to support backing up and undo. */
+ char *_IO_save_base; /* Pointer to start of non-current get area. */
+ char *_IO_backup_base; /* Pointer to first valid character of backup area */
+ char *_IO_save_end; /* Pointer to end of non-current get area. */
+
+ struct _IO_marker *_markers;
+
+ struct _IO_FILE *_chain;
+
+ int _fileno;
+ int _flags2;
+ __off_t _old_offset; /* This used to be _offset but it's too small. */
+
+ /* 1+column number of pbase(); 0 is unknown. */
+ unsigned short _cur_column;
+ signed char _vtable_offset;
+ char _shortbuf[1];
+
+ _IO_lock_t *_lock;
+#ifdef _IO_USE_OLD_IO_FILE
+};
+
+struct _IO_FILE_complete
+{
+ struct _IO_FILE _file;
+#endif
+ __off64_t _offset;
+ /* Wide character stream stuff. */
+ struct _IO_codecvt *_codecvt;
+ struct _IO_wide_data *_wide_data;
+ struct _IO_FILE *_freeres_list;
+ void *_freeres_buf;
+ size_t __pad5;
+ int _mode;
+ /* Make sure we don't get into trouble again. */
+ char _unused2[15 * sizeof (int) - 4 * sizeof (void *) - sizeof (size_t)];
+};
+
+/* These macros are used by bits/stdio.h and internal headers. */
+#define __getc_unlocked_body(_fp) \
+ (__glibc_unlikely ((_fp)->_IO_read_ptr >= (_fp)->_IO_read_end) \
+ ? __uflow (_fp) : *(unsigned char *) (_fp)->_IO_read_ptr++)
+
+#define __putc_unlocked_body(_ch, _fp) \
+ (__glibc_unlikely ((_fp)->_IO_write_ptr >= (_fp)->_IO_write_end) \
+ ? __overflow (_fp, (unsigned char) (_ch)) \
+ : (unsigned char) (*(_fp)->_IO_write_ptr++ = (_ch)))
+
+#define _IO_EOF_SEEN 0x0010
+#define __feof_unlocked_body(_fp) (((_fp)->_flags & _IO_EOF_SEEN) != 0)
+
+#define _IO_ERR_SEEN 0x0020
+#define __ferror_unlocked_body(_fp) (((_fp)->_flags & _IO_ERR_SEEN) != 0)
+
+#define _IO_USER_LOCK 0x8000
+/* Many more flag bits are defined internally. */
+
+#endif
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_FILE.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_FILE.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timespec.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timespec.h
new file mode 100644
index 0000000..5b77c52
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timespec.h
@@ -0,0 +1,15 @@
+/* NB: Include guard matches what uses. */
+#ifndef _STRUCT_TIMESPEC
+#define _STRUCT_TIMESPEC 1
+
+#include
+
+/* POSIX.1b structure for a time value. This is like a `struct timeval' but
+ has nanoseconds instead of microseconds. */
+struct timespec
+{
+ __time_t tv_sec; /* Seconds. */
+ __syscall_slong_t tv_nsec; /* Nanoseconds. */
+};
+
+#endif
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timespec.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timespec.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timeval.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timeval.h
new file mode 100644
index 0000000..70394ce
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timeval.h
@@ -0,0 +1,13 @@
+#ifndef __timeval_defined
+#define __timeval_defined 1
+
+#include
+
+/* A time value that is accurate to the nearest
+ microsecond but also has a range of years. */
+struct timeval
+{
+ __time_t tv_sec; /* Seconds. */
+ __suseconds_t tv_usec; /* Microseconds. */
+};
+#endif
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timeval.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@struct_timeval.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@time_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@time_t.h
new file mode 100644
index 0000000..ab8287c
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@time_t.h
@@ -0,0 +1,9 @@
+#ifndef __time_t_defined
+#define __time_t_defined 1
+
+#include
+
+/* Returned by `time'. */
+typedef __time_t time_t;
+
+#endif
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@time_t.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@time_t.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@timer_t.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@timer_t.h
new file mode 100644
index 0000000..d71a413
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@timer_t.h
@@ -0,0 +1,9 @@
+#ifndef __timer_t_defined
+#define __timer_t_defined 1
+
+#include
+
+/* Timer ID returned by `timer_create'. */
+typedef __timer_t timer_t;
+
+#endif
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@timer_t.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@types@timer_t.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@typesizes.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@typesizes.h
new file mode 100644
index 0000000..18d2c63
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@typesizes.h
@@ -0,0 +1,95 @@
+/* bits/typesizes.h -- underlying types for *_t. Linux/x86-64 version.
+ Copyright (C) 2012-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#ifndef _BITS_TYPES_H
+# error "Never include directly; use instead."
+#endif
+
+#ifndef _BITS_TYPESIZES_H
+#define _BITS_TYPESIZES_H 1
+
+/* See for the meaning of these macros. This file exists so
+ that need not vary across different GNU platforms. */
+
+/* X32 kernel interface is 64-bit. */
+#if defined __x86_64__ && defined __ILP32__
+# define __SYSCALL_SLONG_TYPE __SQUAD_TYPE
+# define __SYSCALL_ULONG_TYPE __UQUAD_TYPE
+#else
+# define __SYSCALL_SLONG_TYPE __SLONGWORD_TYPE
+# define __SYSCALL_ULONG_TYPE __ULONGWORD_TYPE
+#endif
+
+#define __DEV_T_TYPE __UQUAD_TYPE
+#define __UID_T_TYPE __U32_TYPE
+#define __GID_T_TYPE __U32_TYPE
+#define __INO_T_TYPE __SYSCALL_ULONG_TYPE
+#define __INO64_T_TYPE __UQUAD_TYPE
+#define __MODE_T_TYPE __U32_TYPE
+#ifdef __x86_64__
+# define __NLINK_T_TYPE __SYSCALL_ULONG_TYPE
+# define __FSWORD_T_TYPE __SYSCALL_SLONG_TYPE
+#else
+# define __NLINK_T_TYPE __UWORD_TYPE
+# define __FSWORD_T_TYPE __SWORD_TYPE
+#endif
+#define __OFF_T_TYPE __SYSCALL_SLONG_TYPE
+#define __OFF64_T_TYPE __SQUAD_TYPE
+#define __PID_T_TYPE __S32_TYPE
+#define __RLIM_T_TYPE __SYSCALL_ULONG_TYPE
+#define __RLIM64_T_TYPE __UQUAD_TYPE
+#define __BLKCNT_T_TYPE __SYSCALL_SLONG_TYPE
+#define __BLKCNT64_T_TYPE __SQUAD_TYPE
+#define __FSBLKCNT_T_TYPE __SYSCALL_ULONG_TYPE
+#define __FSBLKCNT64_T_TYPE __UQUAD_TYPE
+#define __FSFILCNT_T_TYPE __SYSCALL_ULONG_TYPE
+#define __FSFILCNT64_T_TYPE __UQUAD_TYPE
+#define __ID_T_TYPE __U32_TYPE
+#define __CLOCK_T_TYPE __SYSCALL_SLONG_TYPE
+#define __TIME_T_TYPE __SYSCALL_SLONG_TYPE
+#define __USECONDS_T_TYPE __U32_TYPE
+#define __SUSECONDS_T_TYPE __SYSCALL_SLONG_TYPE
+#define __DADDR_T_TYPE __S32_TYPE
+#define __KEY_T_TYPE __S32_TYPE
+#define __CLOCKID_T_TYPE __S32_TYPE
+#define __TIMER_T_TYPE void *
+#define __BLKSIZE_T_TYPE __SYSCALL_SLONG_TYPE
+#define __FSID_T_TYPE struct { int __val[2]; }
+#define __SSIZE_T_TYPE __SWORD_TYPE
+#define __CPU_MASK_TYPE __SYSCALL_ULONG_TYPE
+
+#ifdef __x86_64__
+/* Tell the libc code that off_t and off64_t are actually the same type
+ for all ABI purposes, even if possibly expressed as different base types
+ for C type-checking purposes. */
+# define __OFF_T_MATCHES_OFF64_T 1
+
+/* Same for ino_t and ino64_t. */
+# define __INO_T_MATCHES_INO64_T 1
+
+/* And for __rlim_t and __rlim64_t. */
+# define __RLIM_T_MATCHES_RLIM64_T 1
+#else
+# define __RLIM_T_MATCHES_RLIM64_T 0
+#endif
+
+/* Number of descriptors that can fit in an `fd_set'. */
+#define __FD_SETSIZE 1024
+
+
+#endif /* bits/typesizes.h */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@typesizes.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@typesizes.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@uintn-identity.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@uintn-identity.h
new file mode 100644
index 0000000..23824f9
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@uintn-identity.h
@@ -0,0 +1,50 @@
+/* Inline functions to return unsigned integer values unchanged.
+ Copyright (C) 2017-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#if !defined _NETINET_IN_H && !defined _ENDIAN_H
+# error "Never use directly; include or instead."
+#endif
+
+#ifndef _BITS_UINTN_IDENTITY_H
+#define _BITS_UINTN_IDENTITY_H 1
+
+#include
+
+/* These inline functions are to ensure the appropriate type
+ conversions and associated diagnostics from macros that convert to
+ a given endianness. */
+
+static __inline __uint16_t
+__uint16_identity (__uint16_t __x)
+{
+ return __x;
+}
+
+static __inline __uint32_t
+__uint32_identity (__uint32_t __x)
+{
+ return __x;
+}
+
+static __inline __uint64_t
+__uint64_identity (__uint64_t __x)
+{
+ return __x;
+}
+
+#endif /* _BITS_UINTN_IDENTITY_H. */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@uintn-identity.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@uintn-identity.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitflags.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitflags.h
new file mode 100644
index 0000000..790cfb3
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitflags.h
@@ -0,0 +1,39 @@
+/* Definitions of flag bits for `waitpid' et al.
+ Copyright (C) 1992-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#if !defined _SYS_WAIT_H && !defined _STDLIB_H
+# error "Never include directly; use instead."
+#endif
+
+
+/* Bits in the third argument to `waitpid'. */
+#define WNOHANG 1 /* Don't block waiting. */
+#define WUNTRACED 2 /* Report status of stopped children. */
+
+/* Bits in the fourth argument to `waitid'. */
+#if defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K8
+# define WSTOPPED 2 /* Report stopped child (same as WUNTRACED). */
+# define WEXITED 4 /* Report dead child. */
+# define WCONTINUED 8 /* Report continued child. */
+# define WNOWAIT 0x01000000 /* Don't reap, just poll status. */
+#endif
+
+#define __WNOTHREAD 0x20000000 /* Don't wait on children of other threads
+ in this group */
+#define __WALL 0x40000000 /* Wait for any child. */
+#define __WCLONE 0x80000000 /* Wait for cloned process. */
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitflags.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitflags.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitstatus.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitstatus.h
new file mode 100644
index 0000000..9d08786
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitstatus.h
@@ -0,0 +1,59 @@
+/* Definitions of status bits for `wait' et al.
+ Copyright (C) 1992-2019 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ . */
+
+#if !defined _SYS_WAIT_H && !defined _STDLIB_H
+# error "Never include directly; use instead."
+#endif
+
+
+/* Everything extant so far uses these same bits. */
+
+
+/* If WIFEXITED(STATUS), the low-order 8 bits of the status. */
+#define __WEXITSTATUS(status) (((status) & 0xff00) >> 8)
+
+/* If WIFSIGNALED(STATUS), the terminating signal. */
+#define __WTERMSIG(status) ((status) & 0x7f)
+
+/* If WIFSTOPPED(STATUS), the signal that stopped the child. */
+#define __WSTOPSIG(status) __WEXITSTATUS(status)
+
+/* Nonzero if STATUS indicates normal termination. */
+#define __WIFEXITED(status) (__WTERMSIG(status) == 0)
+
+/* Nonzero if STATUS indicates termination by a signal. */
+#define __WIFSIGNALED(status) \
+ (((signed char) (((status) & 0x7f) + 1) >> 1) > 0)
+
+/* Nonzero if STATUS indicates the child is stopped. */
+#define __WIFSTOPPED(status) (((status) & 0xff) == 0x7f)
+
+/* Nonzero if STATUS indicates the child continued after a stop. We only
+ define this if provides the WCONTINUED flag bit. */
+#ifdef WCONTINUED
+# define __WIFCONTINUED(status) ((status) == __W_CONTINUED)
+#endif
+
+/* Nonzero if STATUS indicates the child dumped core. */
+#define __WCOREDUMP(status) ((status) & __WCOREFLAG)
+
+/* Macros for constructing status values. */
+#define __W_EXITCODE(ret, sig) ((ret) << 8 | (sig))
+#define __W_STOPCODE(sig) ((sig) << 8 | 0x7f)
+#define __W_CONTINUED 0xffff
+#define __WCOREFLAG 0x80
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitstatus.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@waitstatus.h.blob
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@wordsize.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@wordsize.h
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index 0000000..70f652b
--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@bits@wordsize.h
@@ -0,0 +1,17 @@
+/* Determine the wordsize from the preprocessor defines. */
+
+#if defined __x86_64__ && !defined __ILP32__
+# define __WORDSIZE 64
+#else
+# define __WORDSIZE 32
+#define __WORDSIZE32_SIZE_ULONG 0
+#define __WORDSIZE32_PTRDIFF_LONG 0
+#endif
+
+#ifdef __x86_64__
+# define __WORDSIZE_TIME64_COMPAT32 1
+/* Both x86-64 and x32 use the 64-bit system call interface. */
+# define __SYSCALL_WORDSIZE 64
+#else
+# define __WORDSIZE_TIME64_COMPAT32 0
+#endif
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diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@c++@9@bits@std_abs.h b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@c++@9@bits@std_abs.h
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+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@c++@9@bits@std_abs.h
@@ -0,0 +1,111 @@
+// -*- C++ -*- C library enhancements header.
+
+// Copyright (C) 2016-2019 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file include/bits/std_abs.h
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{cmath, cstdlib}
+ */
+
+#ifndef _GLIBCXX_BITS_STD_ABS_H
+#define _GLIBCXX_BITS_STD_ABS_H
+
+#pragma GCC system_header
+
+#include
+
+#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS
+#include_next
+#ifdef __CORRECT_ISO_CPP_MATH_H_PROTO
+# include_next
+#endif
+#undef _GLIBCXX_INCLUDE_NEXT_C_HEADERS
+
+#undef abs
+
+extern "C++"
+{
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ using ::abs;
+
+#ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO
+ inline long
+ abs(long __i) { return __builtin_labs(__i); }
+#endif
+
+#ifdef _GLIBCXX_USE_LONG_LONG
+ inline long long
+ abs(long long __x) { return __builtin_llabs (__x); }
+#endif
+
+// _GLIBCXX_RESOLVE_LIB_DEFECTS
+// 2192. Validity and return type of std::abs(0u) is unclear
+// 2294. should declare abs(double)
+// 2735. std::abs(short), std::abs(signed char) and others should return int
+
+#ifndef __CORRECT_ISO_CPP_MATH_H_PROTO
+ inline _GLIBCXX_CONSTEXPR double
+ abs(double __x)
+ { return __builtin_fabs(__x); }
+
+ inline _GLIBCXX_CONSTEXPR float
+ abs(float __x)
+ { return __builtin_fabsf(__x); }
+
+ inline _GLIBCXX_CONSTEXPR long double
+ abs(long double __x)
+ { return __builtin_fabsl(__x); }
+#endif
+
+#if defined(__GLIBCXX_TYPE_INT_N_0)
+ inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_0
+ abs(__GLIBCXX_TYPE_INT_N_0 __x) { return __x >= 0 ? __x : -__x; }
+#endif
+#if defined(__GLIBCXX_TYPE_INT_N_1)
+ inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_1
+ abs(__GLIBCXX_TYPE_INT_N_1 __x) { return __x >= 0 ? __x : -__x; }
+#endif
+#if defined(__GLIBCXX_TYPE_INT_N_2)
+ inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_2
+ abs(__GLIBCXX_TYPE_INT_N_2 __x) { return __x >= 0 ? __x : -__x; }
+#endif
+#if defined(__GLIBCXX_TYPE_INT_N_3)
+ inline _GLIBCXX_CONSTEXPR __GLIBCXX_TYPE_INT_N_3
+ abs(__GLIBCXX_TYPE_INT_N_3 __x) { return __x >= 0 ? __x : -__x; }
+#endif
+
+#if !defined(__STRICT_ANSI__) && defined(_GLIBCXX_USE_FLOAT128)
+ inline _GLIBCXX_CONSTEXPR
+ __float128
+ abs(__float128 __x)
+ { return __x < 0 ? -__x : __x; }
+#endif
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+} // extern "C"++"
+
+#endif // _GLIBCXX_BITS_STD_ABS_H
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--- /dev/null
+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@c++@9@cstdlib
@@ -0,0 +1,261 @@
+// -*- C++ -*- forwarding header.
+
+// Copyright (C) 1997-2019 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file include/cstdlib
+ * This is a Standard C++ Library file. You should @c \#include this file
+ * in your programs, rather than any of the @a *.h implementation files.
+ *
+ * This is the C++ version of the Standard C Library header @c stdlib.h,
+ * and its contents are (mostly) the same as that header, but are all
+ * contained in the namespace @c std (except for names which are defined
+ * as macros in C).
+ */
+
+//
+// ISO C++ 14882: 20.4.6 C library
+//
+
+#pragma GCC system_header
+
+#include
+
+#ifndef _GLIBCXX_CSTDLIB
+#define _GLIBCXX_CSTDLIB 1
+
+#if !_GLIBCXX_HOSTED
+// The C standard does not require a freestanding implementation to
+// provide . However, the C++ standard does still require
+// -- but only the functionality mentioned in
+// [lib.support.start.term].
+
+#define EXIT_SUCCESS 0
+#define EXIT_FAILURE 1
+
+namespace std
+{
+ extern "C" void abort(void) throw () _GLIBCXX_NORETURN;
+ extern "C" int atexit(void (*)(void)) throw ();
+ extern "C" void exit(int) throw () _GLIBCXX_NORETURN;
+#if __cplusplus >= 201103L
+# ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
+ extern "C" int at_quick_exit(void (*)(void)) throw ();
+# endif
+# ifdef _GLIBCXX_HAVE_QUICK_EXIT
+ extern "C" void quick_exit(int) throw() _GLIBCXX_NORETURN;
+# endif
+#endif
+} // namespace std
+
+#else
+
+// Need to ensure this finds the C library's not a libstdc++
+// wrapper that might already be installed later in the include search path.
+#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS
+#include_next
+#undef _GLIBCXX_INCLUDE_NEXT_C_HEADERS
+#include
+
+// Get rid of those macros defined in in lieu of real functions.
+#undef abort
+#if __cplusplus >= 201703L && defined(_GLIBCXX_HAVE_ALIGNED_ALLOC)
+# undef aligned_alloc
+#endif
+#undef atexit
+#if __cplusplus >= 201103L
+# ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
+# undef at_quick_exit
+# endif
+#endif
+#undef atof
+#undef atoi
+#undef atol
+#undef bsearch
+#undef calloc
+#undef div
+#undef exit
+#undef free
+#undef getenv
+#undef labs
+#undef ldiv
+#undef malloc
+#undef mblen
+#undef mbstowcs
+#undef mbtowc
+#undef qsort
+#if __cplusplus >= 201103L
+# ifdef _GLIBCXX_HAVE_QUICK_EXIT
+# undef quick_exit
+# endif
+#endif
+#undef rand
+#undef realloc
+#undef srand
+#undef strtod
+#undef strtol
+#undef strtoul
+#undef system
+#undef wcstombs
+#undef wctomb
+
+extern "C++"
+{
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ using ::div_t;
+ using ::ldiv_t;
+
+ using ::abort;
+#if __cplusplus >= 201703L && defined(_GLIBCXX_HAVE_ALIGNED_ALLOC)
+ using ::aligned_alloc;
+#endif
+ using ::atexit;
+#if __cplusplus >= 201103L
+# ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
+ using ::at_quick_exit;
+# endif
+#endif
+ using ::atof;
+ using ::atoi;
+ using ::atol;
+ using ::bsearch;
+ using ::calloc;
+ using ::div;
+ using ::exit;
+ using ::free;
+ using ::getenv;
+ using ::labs;
+ using ::ldiv;
+ using ::malloc;
+#ifdef _GLIBCXX_HAVE_MBSTATE_T
+ using ::mblen;
+ using ::mbstowcs;
+ using ::mbtowc;
+#endif // _GLIBCXX_HAVE_MBSTATE_T
+ using ::qsort;
+#if __cplusplus >= 201103L
+# ifdef _GLIBCXX_HAVE_QUICK_EXIT
+ using ::quick_exit;
+# endif
+#endif
+ using ::rand;
+ using ::realloc;
+ using ::srand;
+ using ::strtod;
+ using ::strtol;
+ using ::strtoul;
+ using ::system;
+#ifdef _GLIBCXX_USE_WCHAR_T
+ using ::wcstombs;
+ using ::wctomb;
+#endif // _GLIBCXX_USE_WCHAR_T
+
+#ifndef __CORRECT_ISO_CPP_STDLIB_H_PROTO
+ inline ldiv_t
+ div(long __i, long __j) { return ldiv(__i, __j); }
+#endif
+
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
+
+#if _GLIBCXX_USE_C99_STDLIB
+
+#undef _Exit
+#undef llabs
+#undef lldiv
+#undef atoll
+#undef strtoll
+#undef strtoull
+#undef strtof
+#undef strtold
+
+namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
+ using ::lldiv_t;
+#endif
+#if _GLIBCXX_USE_C99_CHECK || _GLIBCXX_USE_C99_DYNAMIC
+ extern "C" void (_Exit)(int) throw () _GLIBCXX_NORETURN;
+#endif
+#if !_GLIBCXX_USE_C99_DYNAMIC
+ using ::_Exit;
+#endif
+
+#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
+ using ::llabs;
+
+ inline lldiv_t
+ div(long long __n, long long __d)
+ { lldiv_t __q; __q.quot = __n / __d; __q.rem = __n % __d; return __q; }
+
+ using ::lldiv;
+#endif
+
+#if _GLIBCXX_USE_C99_LONG_LONG_CHECK || _GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
+ extern "C" long long int (atoll)(const char *) throw ();
+ extern "C" long long int
+ (strtoll)(const char * __restrict, char ** __restrict, int) throw ();
+ extern "C" unsigned long long int
+ (strtoull)(const char * __restrict, char ** __restrict, int) throw ();
+#endif
+#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
+ using ::atoll;
+ using ::strtoll;
+ using ::strtoull;
+#endif
+ using ::strtof;
+ using ::strtold;
+
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace __gnu_cxx
+
+namespace std
+{
+#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
+ using ::__gnu_cxx::lldiv_t;
+#endif
+ using ::__gnu_cxx::_Exit;
+#if !_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC
+ using ::__gnu_cxx::llabs;
+ using ::__gnu_cxx::div;
+ using ::__gnu_cxx::lldiv;
+#endif
+ using ::__gnu_cxx::atoll;
+ using ::__gnu_cxx::strtof;
+ using ::__gnu_cxx::strtoll;
+ using ::__gnu_cxx::strtoull;
+ using ::__gnu_cxx::strtold;
+} // namespace std
+
+#endif // _GLIBCXX_USE_C99_STDLIB
+
+} // extern "C++"
+
+#endif // !_GLIBCXX_HOSTED
+
+#endif
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+++ b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@c++@9@stdlib.h
@@ -0,0 +1,86 @@
+// -*- C++ -*- compatibility header.
+
+// Copyright (C) 2002-2019 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file stdlib.h
+ * This is a Standard C++ Library header.
+ */
+
+#if !defined __cplusplus || defined _GLIBCXX_INCLUDE_NEXT_C_HEADERS
+# include_next
+#else
+
+#ifndef _GLIBCXX_STDLIB_H
+#define _GLIBCXX_STDLIB_H 1
+
+# include
+
+using std::abort;
+using std::atexit;
+using std::exit;
+#if __cplusplus >= 201103L
+# ifdef _GLIBCXX_HAVE_AT_QUICK_EXIT
+ using std::at_quick_exit;
+# endif
+# ifdef _GLIBCXX_HAVE_QUICK_EXIT
+ using std::quick_exit;
+# endif
+#endif
+
+#if _GLIBCXX_HOSTED
+using std::div_t;
+using std::ldiv_t;
+
+using std::abs;
+using std::atof;
+using std::atoi;
+using std::atol;
+using std::bsearch;
+using std::calloc;
+using std::div;
+using std::free;
+using std::getenv;
+using std::labs;
+using std::ldiv;
+using std::malloc;
+#ifdef _GLIBCXX_HAVE_MBSTATE_T
+using std::mblen;
+using std::mbstowcs;
+using std::mbtowc;
+#endif // _GLIBCXX_HAVE_MBSTATE_T
+using std::qsort;
+using std::rand;
+using std::realloc;
+using std::srand;
+using std::strtod;
+using std::strtol;
+using std::strtoul;
+using std::system;
+#ifdef _GLIBCXX_USE_WCHAR_T
+using std::wcstombs;
+using std::wctomb;
+#endif // _GLIBCXX_USE_WCHAR_T
+#endif
+
+#endif // _GLIBCXX_STDLIB_H
+#endif // __cplusplus
diff --git a/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@c++@9@stdlib.h.blob b/day4/1/.ccls-cache/@@home@armin@dev@playground@aoc-2019@day4@1/@usr@include@c++@9@stdlib.h.blob
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@@ -0,0 +1,4137 @@
+#ifndef _CPP_CPPCONFIG_WRAPPER
+#define _CPP_CPPCONFIG_WRAPPER 1
+#include
+#if __WORDSIZE == 32
+// Predefined symbols and macros -*- C++ -*-
+
+// Copyright (C) 1997-2019 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file bits/c++config.h
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{version}
+ */
+
+#ifndef _GLIBCXX_CXX_CONFIG_H
+#define _GLIBCXX_CXX_CONFIG_H 1
+
+// The major release number for the GCC release the C++ library belongs to.
+#define _GLIBCXX_RELEASE 9
+
+// The datestamp of the C++ library in compressed ISO date format.
+#define __GLIBCXX__ 20190827
+
+// Macros for various attributes.
+// _GLIBCXX_PURE
+// _GLIBCXX_CONST
+// _GLIBCXX_NORETURN
+// _GLIBCXX_NOTHROW
+// _GLIBCXX_VISIBILITY
+#ifndef _GLIBCXX_PURE
+# define _GLIBCXX_PURE __attribute__ ((__pure__))
+#endif
+
+#ifndef _GLIBCXX_CONST
+# define _GLIBCXX_CONST __attribute__ ((__const__))
+#endif
+
+#ifndef _GLIBCXX_NORETURN
+# define _GLIBCXX_NORETURN __attribute__ ((__noreturn__))
+#endif
+
+// See below for C++
+#ifndef _GLIBCXX_NOTHROW
+# ifndef __cplusplus
+# define _GLIBCXX_NOTHROW __attribute__((__nothrow__))
+# endif
+#endif
+
+// Macros for visibility attributes.
+// _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
+// _GLIBCXX_VISIBILITY
+# define _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY 1
+
+#if _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
+# define _GLIBCXX_VISIBILITY(V) __attribute__ ((__visibility__ (#V)))
+#else
+// If this is not supplied by the OS-specific or CPU-specific
+// headers included below, it will be defined to an empty default.
+# define _GLIBCXX_VISIBILITY(V) _GLIBCXX_PSEUDO_VISIBILITY(V)
+#endif
+
+// Macros for deprecated attributes.
+// _GLIBCXX_USE_DEPRECATED
+// _GLIBCXX_DEPRECATED
+// _GLIBCXX17_DEPRECATED
+#ifndef _GLIBCXX_USE_DEPRECATED
+# define _GLIBCXX_USE_DEPRECATED 1
+#endif
+
+#if defined(__DEPRECATED) && (__cplusplus >= 201103L)
+# define _GLIBCXX_DEPRECATED __attribute__ ((__deprecated__))
+#else
+# define _GLIBCXX_DEPRECATED
+#endif
+
+#if defined(__DEPRECATED) && (__cplusplus >= 201703L)
+# define _GLIBCXX17_DEPRECATED [[__deprecated__]]
+#else
+# define _GLIBCXX17_DEPRECATED
+#endif
+
+// Macros for ABI tag attributes.
+#ifndef _GLIBCXX_ABI_TAG_CXX11
+# define _GLIBCXX_ABI_TAG_CXX11 __attribute ((__abi_tag__ ("cxx11")))
+#endif
+
+// Macro to warn about unused results.
+#if __cplusplus >= 201703L
+# define _GLIBCXX_NODISCARD [[__nodiscard__]]
+#else
+# define _GLIBCXX_NODISCARD
+#endif
+
+
+
+#if __cplusplus
+
+// Macro for constexpr, to support in mixed 03/0x mode.
+#ifndef _GLIBCXX_CONSTEXPR
+# if __cplusplus >= 201103L
+# define _GLIBCXX_CONSTEXPR constexpr
+# define _GLIBCXX_USE_CONSTEXPR constexpr
+# else
+# define _GLIBCXX_CONSTEXPR
+# define _GLIBCXX_USE_CONSTEXPR const
+# endif
+#endif
+
+#ifndef _GLIBCXX14_CONSTEXPR
+# if __cplusplus >= 201402L
+# define _GLIBCXX14_CONSTEXPR constexpr
+# else
+# define _GLIBCXX14_CONSTEXPR
+# endif
+#endif
+
+#ifndef _GLIBCXX17_CONSTEXPR
+# if __cplusplus >= 201703L
+# define _GLIBCXX17_CONSTEXPR constexpr
+# else
+# define _GLIBCXX17_CONSTEXPR
+# endif
+#endif
+
+#ifndef _GLIBCXX20_CONSTEXPR
+# if __cplusplus > 201703L
+# define _GLIBCXX20_CONSTEXPR constexpr
+# else
+# define _GLIBCXX20_CONSTEXPR
+# endif
+#endif
+
+#ifndef _GLIBCXX17_INLINE
+# if __cplusplus >= 201703L
+# define _GLIBCXX17_INLINE inline
+# else
+# define _GLIBCXX17_INLINE
+# endif
+#endif
+
+// Macro for noexcept, to support in mixed 03/0x mode.
+#ifndef _GLIBCXX_NOEXCEPT
+# if __cplusplus >= 201103L
+# define _GLIBCXX_NOEXCEPT noexcept
+# define _GLIBCXX_NOEXCEPT_IF(_COND) noexcept(_COND)
+# define _GLIBCXX_USE_NOEXCEPT noexcept
+# define _GLIBCXX_THROW(_EXC)
+# else
+# define _GLIBCXX_NOEXCEPT
+# define _GLIBCXX_NOEXCEPT_IF(_COND)
+# define _GLIBCXX_USE_NOEXCEPT throw()
+# define _GLIBCXX_THROW(_EXC) throw(_EXC)
+# endif
+#endif
+
+#ifndef _GLIBCXX_NOTHROW
+# define _GLIBCXX_NOTHROW _GLIBCXX_USE_NOEXCEPT
+#endif
+
+#ifndef _GLIBCXX_THROW_OR_ABORT
+# if __cpp_exceptions
+# define _GLIBCXX_THROW_OR_ABORT(_EXC) (throw (_EXC))
+# else
+# define _GLIBCXX_THROW_OR_ABORT(_EXC) (__builtin_abort())
+# endif
+#endif
+
+#if __cpp_noexcept_function_type
+#define _GLIBCXX_NOEXCEPT_PARM , bool _NE
+#define _GLIBCXX_NOEXCEPT_QUAL noexcept (_NE)
+#else
+#define _GLIBCXX_NOEXCEPT_PARM
+#define _GLIBCXX_NOEXCEPT_QUAL
+#endif
+
+// Macro for extern template, ie controlling template linkage via use
+// of extern keyword on template declaration. As documented in the g++
+// manual, it inhibits all implicit instantiations and is used
+// throughout the library to avoid multiple weak definitions for
+// required types that are already explicitly instantiated in the
+// library binary. This substantially reduces the binary size of
+// resulting executables.
+// Special case: _GLIBCXX_EXTERN_TEMPLATE == -1 disallows extern
+// templates only in basic_string, thus activating its debug-mode
+// checks even at -O0.
+# define _GLIBCXX_EXTERN_TEMPLATE 1
+
+/*
+ Outline of libstdc++ namespaces.
+
+ namespace std
+ {
+ namespace __debug { }
+ namespace __parallel { }
+ namespace __profile { }
+ namespace __cxx1998 { }
+
+ namespace __detail {
+ namespace __variant { } // C++17
+ }
+
+ namespace rel_ops { }
+
+ namespace tr1
+ {
+ namespace placeholders { }
+ namespace regex_constants { }
+ namespace __detail { }
+ }
+
+ namespace tr2 { }
+
+ namespace decimal { }
+
+ namespace chrono { } // C++11
+ namespace placeholders { } // C++11
+ namespace regex_constants { } // C++11
+ namespace this_thread { } // C++11
+ inline namespace literals { // C++14
+ inline namespace chrono_literals { } // C++14
+ inline namespace complex_literals { } // C++14
+ inline namespace string_literals { } // C++14
+ inline namespace string_view_literals { } // C++17
+ }
+ }
+
+ namespace abi { }
+
+ namespace __gnu_cxx
+ {
+ namespace __detail { }
+ }
+
+ For full details see:
+ http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/namespaces.html
+*/
+namespace std
+{
+ typedef __SIZE_TYPE__ size_t;
+ typedef __PTRDIFF_TYPE__ ptrdiff_t;
+
+#if __cplusplus >= 201103L
+ typedef decltype(nullptr) nullptr_t;
+#endif
+}
+
+# define _GLIBCXX_USE_DUAL_ABI 1
+
+#if ! _GLIBCXX_USE_DUAL_ABI
+// Ignore any pre-defined value of _GLIBCXX_USE_CXX11_ABI
+# undef _GLIBCXX_USE_CXX11_ABI
+#endif
+
+#ifndef _GLIBCXX_USE_CXX11_ABI
+# define _GLIBCXX_USE_CXX11_ABI 1
+#endif
+
+#if _GLIBCXX_USE_CXX11_ABI
+namespace std
+{
+ inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
+}
+namespace __gnu_cxx
+{
+ inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
+}
+# define _GLIBCXX_NAMESPACE_CXX11 __cxx11::
+# define _GLIBCXX_BEGIN_NAMESPACE_CXX11 namespace __cxx11 {
+# define _GLIBCXX_END_NAMESPACE_CXX11 }
+# define _GLIBCXX_DEFAULT_ABI_TAG _GLIBCXX_ABI_TAG_CXX11
+#else
+# define _GLIBCXX_NAMESPACE_CXX11
+# define _GLIBCXX_BEGIN_NAMESPACE_CXX11
+# define _GLIBCXX_END_NAMESPACE_CXX11
+# define _GLIBCXX_DEFAULT_ABI_TAG
+#endif
+
+// Defined if inline namespaces are used for versioning.
+# define _GLIBCXX_INLINE_VERSION 0
+
+// Inline namespace for symbol versioning.
+#if _GLIBCXX_INLINE_VERSION
+# define _GLIBCXX_BEGIN_NAMESPACE_VERSION namespace __8 {
+# define _GLIBCXX_END_NAMESPACE_VERSION }
+
+namespace std
+{
+inline _GLIBCXX_BEGIN_NAMESPACE_VERSION
+#if __cplusplus >= 201402L
+ inline namespace literals {
+ inline namespace chrono_literals { }
+ inline namespace complex_literals { }
+ inline namespace string_literals { }
+#if __cplusplus > 201402L
+ inline namespace string_view_literals { }
+#endif // C++17
+ }
+#endif // C++14
+_GLIBCXX_END_NAMESPACE_VERSION
+}
+
+namespace __gnu_cxx
+{
+inline _GLIBCXX_BEGIN_NAMESPACE_VERSION
+_GLIBCXX_END_NAMESPACE_VERSION
+}
+
+#else
+# define _GLIBCXX_BEGIN_NAMESPACE_VERSION
+# define _GLIBCXX_END_NAMESPACE_VERSION
+#endif
+
+// Inline namespaces for special modes: debug, parallel, profile.
+#if defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PARALLEL) \
+ || defined(_GLIBCXX_PROFILE)
+namespace std
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ // Non-inline namespace for components replaced by alternates in active mode.
+ namespace __cxx1998
+ {
+# if _GLIBCXX_USE_CXX11_ABI
+ inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
+# endif
+ }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+
+ // Inline namespace for debug mode.
+# ifdef _GLIBCXX_DEBUG
+ inline namespace __debug { }
+# endif
+
+ // Inline namespaces for parallel mode.
+# ifdef _GLIBCXX_PARALLEL
+ inline namespace __parallel { }
+# endif
+
+ // Inline namespaces for profile mode
+# ifdef _GLIBCXX_PROFILE
+ inline namespace __profile { }
+# endif
+}
+
+// Check for invalid usage and unsupported mixed-mode use.
+# if defined(_GLIBCXX_DEBUG) && defined(_GLIBCXX_PARALLEL)
+# error illegal use of multiple inlined namespaces
+# endif
+# if defined(_GLIBCXX_PROFILE) && defined(_GLIBCXX_DEBUG)
+# error illegal use of multiple inlined namespaces
+# endif
+# if defined(_GLIBCXX_PROFILE) && defined(_GLIBCXX_PARALLEL)
+# error illegal use of multiple inlined namespaces
+# endif
+
+// Check for invalid use due to lack for weak symbols.
+# if __NO_INLINE__ && !__GXX_WEAK__
+# warning currently using inlined namespace mode which may fail \
+ without inlining due to lack of weak symbols
+# endif
+#endif
+
+// Macros for namespace scope. Either namespace std:: or the name
+// of some nested namespace within it corresponding to the active mode.
+// _GLIBCXX_STD_A
+// _GLIBCXX_STD_C
+//
+// Macros for opening/closing conditional namespaces.
+// _GLIBCXX_BEGIN_NAMESPACE_ALGO
+// _GLIBCXX_END_NAMESPACE_ALGO
+// _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
+// _GLIBCXX_END_NAMESPACE_CONTAINER
+#if defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PROFILE)
+# define _GLIBCXX_STD_C __cxx1998
+# define _GLIBCXX_BEGIN_NAMESPACE_CONTAINER \
+ namespace _GLIBCXX_STD_C {
+# define _GLIBCXX_END_NAMESPACE_CONTAINER }
+#else
+# define _GLIBCXX_STD_C std
+# define _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
+# define _GLIBCXX_END_NAMESPACE_CONTAINER
+#endif
+
+#ifdef _GLIBCXX_PARALLEL
+# define _GLIBCXX_STD_A __cxx1998
+# define _GLIBCXX_BEGIN_NAMESPACE_ALGO \
+ namespace _GLIBCXX_STD_A {
+# define _GLIBCXX_END_NAMESPACE_ALGO }
+#else
+# define _GLIBCXX_STD_A std
+# define _GLIBCXX_BEGIN_NAMESPACE_ALGO
+# define _GLIBCXX_END_NAMESPACE_ALGO
+#endif
+
+// GLIBCXX_ABI Deprecated
+// Define if compatibility should be provided for -mlong-double-64.
+#undef _GLIBCXX_LONG_DOUBLE_COMPAT
+
+// Inline namespace for long double 128 mode.
+#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
+namespace std
+{
+ inline namespace __gnu_cxx_ldbl128 { }
+}
+# define _GLIBCXX_NAMESPACE_LDBL __gnu_cxx_ldbl128::
+# define _GLIBCXX_BEGIN_NAMESPACE_LDBL namespace __gnu_cxx_ldbl128 {
+# define _GLIBCXX_END_NAMESPACE_LDBL }
+#else
+# define _GLIBCXX_NAMESPACE_LDBL
+# define _GLIBCXX_BEGIN_NAMESPACE_LDBL
+# define _GLIBCXX_END_NAMESPACE_LDBL
+#endif
+#if _GLIBCXX_USE_CXX11_ABI
+# define _GLIBCXX_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_NAMESPACE_CXX11
+# define _GLIBCXX_BEGIN_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_BEGIN_NAMESPACE_CXX11
+# define _GLIBCXX_END_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_END_NAMESPACE_CXX11
+#else
+# define _GLIBCXX_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_NAMESPACE_LDBL
+# define _GLIBCXX_BEGIN_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_BEGIN_NAMESPACE_LDBL
+# define _GLIBCXX_END_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_END_NAMESPACE_LDBL
+#endif
+
+// Debug Mode implies checking assertions.
+#if defined(_GLIBCXX_DEBUG) && !defined(_GLIBCXX_ASSERTIONS)
+# define _GLIBCXX_ASSERTIONS 1
+#endif
+
+// Disable std::string explicit instantiation declarations in order to assert.
+#ifdef _GLIBCXX_ASSERTIONS
+# undef _GLIBCXX_EXTERN_TEMPLATE
+# define _GLIBCXX_EXTERN_TEMPLATE -1
+#endif
+
+// Assert.
+#if defined(_GLIBCXX_ASSERTIONS) \
+ || defined(_GLIBCXX_PARALLEL) || defined(_GLIBCXX_PARALLEL_ASSERTIONS)
+namespace std
+{
+ // Avoid the use of assert, because we're trying to keep the
+ // include out of the mix.
+ extern "C++" inline void
+ __replacement_assert(const char* __file, int __line,
+ const char* __function, const char* __condition)
+ {
+ __builtin_printf("%s:%d: %s: Assertion '%s' failed.\n", __file, __line,
+ __function, __condition);
+ __builtin_abort();
+ }
+}
+#define __glibcxx_assert_impl(_Condition) \
+ do \
+ { \
+ if (! (_Condition)) \
+ std::__replacement_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \
+ #_Condition); \
+ } while (false)
+#endif
+
+#if defined(_GLIBCXX_ASSERTIONS)
+# define __glibcxx_assert(_Condition) __glibcxx_assert_impl(_Condition)
+#else
+# define __glibcxx_assert(_Condition)
+#endif
+
+// Macros for race detectors.
+// _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(A) and
+// _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A) should be used to explain
+// atomic (lock-free) synchronization to race detectors:
+// the race detector will infer a happens-before arc from the former to the
+// latter when they share the same argument pointer.
+//
+// The most frequent use case for these macros (and the only case in the
+// current implementation of the library) is atomic reference counting:
+// void _M_remove_reference()
+// {
+// _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&this->_M_refcount);
+// if (__gnu_cxx::__exchange_and_add_dispatch(&this->_M_refcount, -1) <= 0)
+// {
+// _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&this->_M_refcount);
+// _M_destroy(__a);
+// }
+// }
+// The annotations in this example tell the race detector that all memory
+// accesses occurred when the refcount was positive do not race with
+// memory accesses which occurred after the refcount became zero.
+#ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE
+# define _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(A)
+#endif
+#ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER
+# define _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A)
+#endif
+
+// Macros for C linkage: define extern "C" linkage only when using C++.
+# define _GLIBCXX_BEGIN_EXTERN_C extern "C" {
+# define _GLIBCXX_END_EXTERN_C }
+
+# define _GLIBCXX_USE_ALLOCATOR_NEW 1
+
+#else // !__cplusplus
+# define _GLIBCXX_BEGIN_EXTERN_C
+# define _GLIBCXX_END_EXTERN_C
+#endif
+
+
+// First includes.
+
+// Pick up any OS-specific definitions.
+#include
+
+// Pick up any CPU-specific definitions.
+#include
+
+// If platform uses neither visibility nor psuedo-visibility,
+// specify empty default for namespace annotation macros.
+#ifndef _GLIBCXX_PSEUDO_VISIBILITY
+# define _GLIBCXX_PSEUDO_VISIBILITY(V)
+#endif
+
+// Certain function definitions that are meant to be overridable from
+// user code are decorated with this macro. For some targets, this
+// macro causes these definitions to be weak.
+#ifndef _GLIBCXX_WEAK_DEFINITION
+# define _GLIBCXX_WEAK_DEFINITION
+#endif
+
+// By default, we assume that __GXX_WEAK__ also means that there is support
+// for declaring functions as weak while not defining such functions. This
+// allows for referring to functions provided by other libraries (e.g.,
+// libitm) without depending on them if the respective features are not used.
+#ifndef _GLIBCXX_USE_WEAK_REF
+# define _GLIBCXX_USE_WEAK_REF __GXX_WEAK__
+#endif
+
+// Conditionally enable annotations for the Transactional Memory TS on C++11.
+// Most of the following conditions are due to limitations in the current
+// implementation.
+#if __cplusplus >= 201103L && _GLIBCXX_USE_CXX11_ABI \
+ && _GLIBCXX_USE_DUAL_ABI && __cpp_transactional_memory >= 201500L \
+ && !_GLIBCXX_FULLY_DYNAMIC_STRING && _GLIBCXX_USE_WEAK_REF \
+ && _GLIBCXX_USE_ALLOCATOR_NEW
+#define _GLIBCXX_TXN_SAFE transaction_safe
+#define _GLIBCXX_TXN_SAFE_DYN transaction_safe_dynamic
+#else
+#define _GLIBCXX_TXN_SAFE
+#define _GLIBCXX_TXN_SAFE_DYN
+#endif
+
+#if __cplusplus > 201402L
+// In C++17 mathematical special functions are in namespace std.
+# define _GLIBCXX_USE_STD_SPEC_FUNCS 1
+#elif __cplusplus >= 201103L && __STDCPP_WANT_MATH_SPEC_FUNCS__ != 0
+// For C++11 and C++14 they are in namespace std when requested.
+# define _GLIBCXX_USE_STD_SPEC_FUNCS 1
+#endif
+
+// The remainder of the prewritten config is automatic; all the
+// user hooks are listed above.
+
+// Create a boolean flag to be used to determine if --fast-math is set.
+#ifdef __FAST_MATH__
+# define _GLIBCXX_FAST_MATH 1
+#else
+# define _GLIBCXX_FAST_MATH 0
+#endif
+
+// This marks string literals in header files to be extracted for eventual
+// translation. It is primarily used for messages in thrown exceptions; see
+// src/functexcept.cc. We use __N because the more traditional _N is used
+// for something else under certain OSes (see BADNAMES).
+#define __N(msgid) (msgid)
+
+// For example, is known to #define min and max as macros...
+#undef min
+#undef max
+
+// N.B. these _GLIBCXX_USE_C99_XXX macros are defined unconditionally
+// so they should be tested with #if not with #ifdef.
+#if __cplusplus >= 201103L
+# ifndef _GLIBCXX_USE_C99_MATH
+# define _GLIBCXX_USE_C99_MATH _GLIBCXX11_USE_C99_MATH
+# endif
+# ifndef _GLIBCXX_USE_C99_COMPLEX
+# define _GLIBCXX_USE_C99_COMPLEX _GLIBCXX11_USE_C99_COMPLEX
+# endif
+# ifndef _GLIBCXX_USE_C99_STDIO
+# define _GLIBCXX_USE_C99_STDIO _GLIBCXX11_USE_C99_STDIO
+# endif
+# ifndef _GLIBCXX_USE_C99_STDLIB
+# define _GLIBCXX_USE_C99_STDLIB _GLIBCXX11_USE_C99_STDLIB
+# endif
+# ifndef _GLIBCXX_USE_C99_WCHAR
+# define _GLIBCXX_USE_C99_WCHAR _GLIBCXX11_USE_C99_WCHAR
+# endif
+#else
+# ifndef _GLIBCXX_USE_C99_MATH
+# define _GLIBCXX_USE_C99_MATH _GLIBCXX98_USE_C99_MATH
+# endif
+# ifndef _GLIBCXX_USE_C99_COMPLEX
+# define _GLIBCXX_USE_C99_COMPLEX _GLIBCXX98_USE_C99_COMPLEX
+# endif
+# ifndef _GLIBCXX_USE_C99_STDIO
+# define _GLIBCXX_USE_C99_STDIO _GLIBCXX98_USE_C99_STDIO
+# endif
+# ifndef _GLIBCXX_USE_C99_STDLIB
+# define _GLIBCXX_USE_C99_STDLIB _GLIBCXX98_USE_C99_STDLIB
+# endif
+# ifndef _GLIBCXX_USE_C99_WCHAR
+# define _GLIBCXX_USE_C99_WCHAR _GLIBCXX98_USE_C99_WCHAR
+# endif
+#endif
+
+// Unless explicitly specified, enable char8_t extensions only if the core
+// language char8_t feature macro is defined.
+#ifndef _GLIBCXX_USE_CHAR8_T
+# ifdef __cpp_char8_t
+# define _GLIBCXX_USE_CHAR8_T 1
+# endif
+#endif
+#ifdef _GLIBCXX_USE_CHAR8_T
+# define __cpp_lib_char8_t 201811L
+#endif
+
+/* Define if __float128 is supported on this host. */
+#if defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__)
+#define _GLIBCXX_USE_FLOAT128 1
+#endif
+
+#if __GNUC__ >= 7
+// Assume these are available if the compiler claims to be a recent GCC:
+# define _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP 1
+# define _GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE 1
+# define _GLIBCXX_HAVE_BUILTIN_LAUNDER 1
+# if __GNUC__ >= 9
+# define _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED 1
+# endif
+#elif defined(__is_identifier) && defined(__has_builtin)
+// For non-GNU compilers:
+# if ! __is_identifier(__has_unique_object_representations)
+# define _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP 1
+# endif
+# if ! __is_identifier(__is_aggregate)
+# define _GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE 1
+# endif
+# if __has_builtin(__builtin_launder)
+# define _GLIBCXX_HAVE_BUILTIN_LAUNDER 1
+# endif
+# if __has_builtin(__builtin_is_constant_evaluated)
+# define _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED 1
+# endif
+#endif // GCC
+
+// PSTL configuration
+
+#if __cplusplus >= 201703L
+// Preserved here so we have some idea which version of upstream we've pulled in
+// #define PSTL_VERSION 104
+// #define PSTL_VERSION_MAJOR (PSTL_VERSION/100)
+// #define PSTL_VERSION_MINOR (PSTL_VERSION - PSTL_VERSION_MAJOR * 100)
+
+// For now this defaults to being based on the presence of Thread Building Blocks
+# ifndef _GLIBCXX_USE_TBB_PAR_BACKEND
+# define _GLIBCXX_USE_TBB_PAR_BACKEND __has_include()
+# endif
+// This section will need some rework when a new (default) backend type is added
+# if _GLIBCXX_USE_TBB_PAR_BACKEND
+# define __PSTL_USE_PAR_POLICIES 1
+# endif
+
+# define __PSTL_ASSERT(_Condition) __glibcxx_assert(_Condition)
+# define __PSTL_ASSERT_MSG(_Condition, _Message) __glibcxx_assert(_Condition)
+
+#include
+
+#endif
+// End of prewritten config; the settings discovered at configure time follow.
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the `acosf' function. */
+#define _GLIBCXX_HAVE_ACOSF 1
+
+/* Define to 1 if you have the `acosl' function. */
+#define _GLIBCXX_HAVE_ACOSL 1
+
+/* Define to 1 if you have the `aligned_alloc' function. */
+#define _GLIBCXX_HAVE_ALIGNED_ALLOC 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the `asinf' function. */
+#define _GLIBCXX_HAVE_ASINF 1
+
+/* Define to 1 if you have the `asinl' function. */
+#define _GLIBCXX_HAVE_ASINL 1
+
+/* Define to 1 if the target assembler supports .symver directive. */
+#define _GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE 1
+
+/* Define to 1 if you have the `atan2f' function. */
+#define _GLIBCXX_HAVE_ATAN2F 1
+
+/* Define to 1 if you have the `atan2l' function. */
+#define _GLIBCXX_HAVE_ATAN2L 1
+
+/* Define to 1 if you have the `atanf' function. */
+#define _GLIBCXX_HAVE_ATANF 1
+
+/* Define to 1 if you have the `atanl' function. */
+#define _GLIBCXX_HAVE_ATANL 1
+
+/* Defined if shared_ptr reference counting should use atomic operations. */
+#define _GLIBCXX_HAVE_ATOMIC_LOCK_POLICY 1
+
+/* Define to 1 if you have the `at_quick_exit' function. */
+#define _GLIBCXX_HAVE_AT_QUICK_EXIT 1
+
+/* Define to 1 if the target assembler supports thread-local storage. */
+/* #undef _GLIBCXX_HAVE_CC_TLS */
+
+/* Define to 1 if you have the `ceilf' function. */
+#define _GLIBCXX_HAVE_CEILF 1
+
+/* Define to 1 if you have the `ceill' function. */
+#define _GLIBCXX_HAVE_CEILL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_COMPLEX_H 1
+
+/* Define to 1 if you have the `cosf' function. */
+#define _GLIBCXX_HAVE_COSF 1
+
+/* Define to 1 if you have the `coshf' function. */
+#define _GLIBCXX_HAVE_COSHF 1
+
+/* Define to 1 if you have the `coshl' function. */
+#define _GLIBCXX_HAVE_COSHL 1
+
+/* Define to 1 if you have the `cosl' function. */
+#define _GLIBCXX_HAVE_COSL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_DIRENT_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_DLFCN_H 1
+
+/* Define if EBADMSG exists. */
+#define _GLIBCXX_HAVE_EBADMSG 1
+
+/* Define if ECANCELED exists. */
+#define _GLIBCXX_HAVE_ECANCELED 1
+
+/* Define if ECHILD exists. */
+#define _GLIBCXX_HAVE_ECHILD 1
+
+/* Define if EIDRM exists. */
+#define _GLIBCXX_HAVE_EIDRM 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_ENDIAN_H 1
+
+/* Define if ENODATA exists. */
+#define _GLIBCXX_HAVE_ENODATA 1
+
+/* Define if ENOLINK exists. */
+#define _GLIBCXX_HAVE_ENOLINK 1
+
+/* Define if ENOSPC exists. */
+#define _GLIBCXX_HAVE_ENOSPC 1
+
+/* Define if ENOSR exists. */
+#define _GLIBCXX_HAVE_ENOSR 1
+
+/* Define if ENOSTR exists. */
+#define _GLIBCXX_HAVE_ENOSTR 1
+
+/* Define if ENOTRECOVERABLE exists. */
+#define _GLIBCXX_HAVE_ENOTRECOVERABLE 1
+
+/* Define if ENOTSUP exists. */
+#define _GLIBCXX_HAVE_ENOTSUP 1
+
+/* Define if EOVERFLOW exists. */
+#define _GLIBCXX_HAVE_EOVERFLOW 1
+
+/* Define if EOWNERDEAD exists. */
+#define _GLIBCXX_HAVE_EOWNERDEAD 1
+
+/* Define if EPERM exists. */
+#define _GLIBCXX_HAVE_EPERM 1
+
+/* Define if EPROTO exists. */
+#define _GLIBCXX_HAVE_EPROTO 1
+
+/* Define if ETIME exists. */
+#define _GLIBCXX_HAVE_ETIME 1
+
+/* Define if ETIMEDOUT exists. */
+#define _GLIBCXX_HAVE_ETIMEDOUT 1
+
+/* Define if ETXTBSY exists. */
+#define _GLIBCXX_HAVE_ETXTBSY 1
+
+/* Define if EWOULDBLOCK exists. */
+#define _GLIBCXX_HAVE_EWOULDBLOCK 1
+
+/* Define to 1 if GCC 4.6 supported std::exception_ptr for the target */
+#define _GLIBCXX_HAVE_EXCEPTION_PTR_SINCE_GCC46 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_EXECINFO_H 1
+
+/* Define to 1 if you have the `expf' function. */
+#define _GLIBCXX_HAVE_EXPF 1
+
+/* Define to 1 if you have the `expl' function. */
+#define _GLIBCXX_HAVE_EXPL 1
+
+/* Define to 1 if you have the `fabsf' function. */
+#define _GLIBCXX_HAVE_FABSF 1
+
+/* Define to 1 if you have the `fabsl' function. */
+#define _GLIBCXX_HAVE_FABSL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_FENV_H 1
+
+/* Define to 1 if you have the `finite' function. */
+#define _GLIBCXX_HAVE_FINITE 1
+
+/* Define to 1 if you have the `finitef' function. */
+#define _GLIBCXX_HAVE_FINITEF 1
+
+/* Define to 1 if you have the `finitel' function. */
+#define _GLIBCXX_HAVE_FINITEL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_FLOAT_H 1
+
+/* Define to 1 if you have the `floorf' function. */
+#define _GLIBCXX_HAVE_FLOORF 1
+
+/* Define to 1 if you have the `floorl' function. */
+#define _GLIBCXX_HAVE_FLOORL 1
+
+/* Define to 1 if you have the `fmodf' function. */
+#define _GLIBCXX_HAVE_FMODF 1
+
+/* Define to 1 if you have the `fmodl' function. */
+#define _GLIBCXX_HAVE_FMODL 1
+
+/* Define to 1 if you have the `fpclass' function. */
+/* #undef _GLIBCXX_HAVE_FPCLASS */
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_FP_H */
+
+/* Define to 1 if you have the `frexpf' function. */
+#define _GLIBCXX_HAVE_FREXPF 1
+
+/* Define to 1 if you have the `frexpl' function. */
+#define _GLIBCXX_HAVE_FREXPL 1
+
+/* Define if _Unwind_GetIPInfo is available. */
+#define _GLIBCXX_HAVE_GETIPINFO 1
+
+/* Define if gets is available in before C++14. */
+#define _GLIBCXX_HAVE_GETS 1
+
+/* Define to 1 if you have the `hypot' function. */
+#define _GLIBCXX_HAVE_HYPOT 1
+
+/* Define to 1 if you have the `hypotf' function. */
+#define _GLIBCXX_HAVE_HYPOTF 1
+
+/* Define to 1 if you have the `hypotl' function. */
+#define _GLIBCXX_HAVE_HYPOTL 1
+
+/* Define if you have the iconv() function. */
+#define _GLIBCXX_HAVE_ICONV 1
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_IEEEFP_H */
+
+/* Define if int64_t is available in . */
+#define _GLIBCXX_HAVE_INT64_T 1
+
+/* Define if int64_t is a long. */
+/* #undef _GLIBCXX_HAVE_INT64_T_LONG */
+
+/* Define if int64_t is a long long. */
+#define _GLIBCXX_HAVE_INT64_T_LONG_LONG 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `isinf' function. */
+/* #undef _GLIBCXX_HAVE_ISINF */
+
+/* Define to 1 if you have the `isinff' function. */
+#define _GLIBCXX_HAVE_ISINFF 1
+
+/* Define to 1 if you have the `isinfl' function. */
+#define _GLIBCXX_HAVE_ISINFL 1
+
+/* Define to 1 if you have the `isnan' function. */
+/* #undef _GLIBCXX_HAVE_ISNAN */
+
+/* Define to 1 if you have the `isnanf' function. */
+#define _GLIBCXX_HAVE_ISNANF 1
+
+/* Define to 1 if you have the `isnanl' function. */
+#define _GLIBCXX_HAVE_ISNANL 1
+
+/* Defined if iswblank exists. */
+#define _GLIBCXX_HAVE_ISWBLANK 1
+
+/* Define if LC_MESSAGES is available in . */
+#define _GLIBCXX_HAVE_LC_MESSAGES 1
+
+/* Define to 1 if you have the `ldexpf' function. */
+#define _GLIBCXX_HAVE_LDEXPF 1
+
+/* Define to 1 if you have the `ldexpl' function. */
+#define _GLIBCXX_HAVE_LDEXPL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_LIBINTL_H 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_AS 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_DATA 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_FSIZE 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_RSS 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_VMEM 0
+
+/* Define if link is available in . */
+#define _GLIBCXX_HAVE_LINK 1
+
+/* Define if futex syscall is available. */
+#define _GLIBCXX_HAVE_LINUX_FUTEX 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_LINUX_RANDOM_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_LINUX_TYPES_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_LOCALE_H 1
+
+/* Define to 1 if you have the `log10f' function. */
+#define _GLIBCXX_HAVE_LOG10F 1
+
+/* Define to 1 if you have the `log10l' function. */
+#define _GLIBCXX_HAVE_LOG10L 1
+
+/* Define to 1 if you have the `logf' function. */
+#define _GLIBCXX_HAVE_LOGF 1
+
+/* Define to 1 if you have the `logl' function. */
+#define _GLIBCXX_HAVE_LOGL 1
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_MACHINE_ENDIAN_H */
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_MACHINE_PARAM_H */
+
+/* Define if mbstate_t exists in wchar.h. */
+#define _GLIBCXX_HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the `memalign' function. */
+#define _GLIBCXX_HAVE_MEMALIGN 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `modf' function. */
+#define _GLIBCXX_HAVE_MODF 1
+
+/* Define to 1 if you have the `modff' function. */
+#define _GLIBCXX_HAVE_MODFF 1
+
+/* Define to 1 if you have the `modfl' function. */
+#define _GLIBCXX_HAVE_MODFL 1
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_NAN_H */
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_NETDB_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_NETINET_TCP_H 1
+
+/* Define if defines obsolete isinf function. */
+/* #undef _GLIBCXX_HAVE_OBSOLETE_ISINF */
+
+/* Define if defines obsolete isnan function. */
+/* #undef _GLIBCXX_HAVE_OBSOLETE_ISNAN */
+
+/* Define if poll is available in . */
+#define _GLIBCXX_HAVE_POLL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_POLL_H 1
+
+/* Define to 1 if you have the `posix_memalign' function. */
+#define _GLIBCXX_HAVE_POSIX_MEMALIGN 1
+
+/* Define to 1 if you have the `powf' function. */
+#define _GLIBCXX_HAVE_POWF 1
+
+/* Define to 1 if you have the `powl' function. */
+#define _GLIBCXX_HAVE_POWL 1
+
+/* Define to 1 if you have the `qfpclass' function. */
+/* #undef _GLIBCXX_HAVE_QFPCLASS */
+
+/* Define to 1 if you have the `quick_exit' function. */
+#define _GLIBCXX_HAVE_QUICK_EXIT 1
+
+/* Define if readlink is available in . */
+#define _GLIBCXX_HAVE_READLINK 1
+
+/* Define to 1 if you have the `setenv' function. */
+#define _GLIBCXX_HAVE_SETENV 1
+
+/* Define to 1 if you have the `sincos' function. */
+#define _GLIBCXX_HAVE_SINCOS 1
+
+/* Define to 1 if you have the `sincosf' function. */
+#define _GLIBCXX_HAVE_SINCOSF 1
+
+/* Define to 1 if you have the `sincosl' function. */
+#define _GLIBCXX_HAVE_SINCOSL 1
+
+/* Define to 1 if you have the `sinf' function. */
+#define _GLIBCXX_HAVE_SINF 1
+
+/* Define to 1 if you have the `sinhf' function. */
+#define _GLIBCXX_HAVE_SINHF 1
+
+/* Define to 1 if you have the `sinhl' function. */
+#define _GLIBCXX_HAVE_SINHL 1
+
+/* Define to 1 if you have the `sinl' function. */
+#define _GLIBCXX_HAVE_SINL 1
+
+/* Defined if sleep exists. */
+/* #undef _GLIBCXX_HAVE_SLEEP */
+
+/* Define to 1 if you have the `sockatmark' function. */
+#define _GLIBCXX_HAVE_SOCKATMARK 1
+
+/* Define to 1 if you have the `sqrtf' function. */
+#define _GLIBCXX_HAVE_SQRTF 1
+
+/* Define to 1 if you have the `sqrtl' function. */
+#define _GLIBCXX_HAVE_SQRTL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_STDALIGN_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_STDBOOL_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_STDINT_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_STDLIB_H 1
+
+/* Define if strerror_l is available in . */
+#define _GLIBCXX_HAVE_STRERROR_L 1
+
+/* Define if strerror_r is available in . */
+#define _GLIBCXX_HAVE_STRERROR_R 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_STRINGS_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_STRING_H 1
+
+/* Define to 1 if you have the `strtof' function. */
+#define _GLIBCXX_HAVE_STRTOF 1
+
+/* Define to 1 if you have the `strtold' function. */
+#define _GLIBCXX_HAVE_STRTOLD 1
+
+/* Define to 1 if `d_type' is a member of `struct dirent'. */
+#define _GLIBCXX_HAVE_STRUCT_DIRENT_D_TYPE 1
+
+/* Define if strxfrm_l is available in . */
+#define _GLIBCXX_HAVE_STRXFRM_L 1
+
+/* Define if symlink is available in . */
+#define _GLIBCXX_HAVE_SYMLINK 1
+
+/* Define to 1 if the target runtime linker supports binding the same symbol
+ to different versions. */
+#define _GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT 1
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_SYS_FILIO_H */
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_IOCTL_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_IPC_H 1
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_SYS_ISA_DEFS_H */
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_SYS_MACHINE_H */
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_PARAM_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_RESOURCE_H 1
+
+/* Define to 1 if you have a suitable header file */
+#define _GLIBCXX_HAVE_SYS_SDT_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_SEM_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_SOCKET_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_STATVFS_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_STAT_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_SYSINFO_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_TIME_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_TYPES_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_SYS_UIO_H 1
+
+/* Define if S_IFREG is available in . */
+/* #undef _GLIBCXX_HAVE_S_IFREG */
+
+/* Define if S_ISREG is available in . */
+#define _GLIBCXX_HAVE_S_ISREG 1
+
+/* Define to 1 if you have the `tanf' function. */
+#define _GLIBCXX_HAVE_TANF 1
+
+/* Define to 1 if you have the `tanhf' function. */
+#define _GLIBCXX_HAVE_TANHF 1
+
+/* Define to 1 if you have the `tanhl' function. */
+#define _GLIBCXX_HAVE_TANHL 1
+
+/* Define to 1 if you have the `tanl' function. */
+#define _GLIBCXX_HAVE_TANL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_TGMATH_H 1
+
+/* Define to 1 if you have the `timespec_get' function. */
+#define _GLIBCXX_HAVE_TIMESPEC_GET 1
+
+/* Define to 1 if the target supports thread-local storage. */
+#define _GLIBCXX_HAVE_TLS 1
+
+/* Define if truncate is available in . */
+#define _GLIBCXX_HAVE_TRUNCATE 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_UCHAR_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_UNISTD_H 1
+
+/* Defined if usleep exists. */
+/* #undef _GLIBCXX_HAVE_USLEEP */
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_UTIME_H 1
+
+/* Defined if vfwscanf exists. */
+#define _GLIBCXX_HAVE_VFWSCANF 1
+
+/* Defined if vswscanf exists. */
+#define _GLIBCXX_HAVE_VSWSCANF 1
+
+/* Defined if vwscanf exists. */
+#define _GLIBCXX_HAVE_VWSCANF 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_WCHAR_H 1
+
+/* Defined if wcstof exists. */
+#define _GLIBCXX_HAVE_WCSTOF 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_WCTYPE_H 1
+
+/* Defined if Sleep exists. */
+/* #undef _GLIBCXX_HAVE_WIN32_SLEEP */
+
+/* Define if writev is available in . */
+#define _GLIBCXX_HAVE_WRITEV 1
+
+/* Define to 1 if you have the `_acosf' function. */
+/* #undef _GLIBCXX_HAVE__ACOSF */
+
+/* Define to 1 if you have the `_acosl' function. */
+/* #undef _GLIBCXX_HAVE__ACOSL */
+
+/* Define to 1 if you have the `_aligned_malloc' function. */
+/* #undef _GLIBCXX_HAVE__ALIGNED_MALLOC */
+
+/* Define to 1 if you have the `_asinf' function. */
+/* #undef _GLIBCXX_HAVE__ASINF */
+
+/* Define to 1 if you have the `_asinl' function. */
+/* #undef _GLIBCXX_HAVE__ASINL */
+
+/* Define to 1 if you have the `_atan2f' function. */
+/* #undef _GLIBCXX_HAVE__ATAN2F */
+
+/* Define to 1 if you have the `_atan2l' function. */
+/* #undef _GLIBCXX_HAVE__ATAN2L */
+
+/* Define to 1 if you have the `_atanf' function. */
+/* #undef _GLIBCXX_HAVE__ATANF */
+
+/* Define to 1 if you have the `_atanl' function. */
+/* #undef _GLIBCXX_HAVE__ATANL */
+
+/* Define to 1 if you have the `_ceilf' function. */
+/* #undef _GLIBCXX_HAVE__CEILF */
+
+/* Define to 1 if you have the `_ceill' function. */
+/* #undef _GLIBCXX_HAVE__CEILL */
+
+/* Define to 1 if you have the `_cosf' function. */
+/* #undef _GLIBCXX_HAVE__COSF */
+
+/* Define to 1 if you have the `_coshf' function. */
+/* #undef _GLIBCXX_HAVE__COSHF */
+
+/* Define to 1 if you have the `_coshl' function. */
+/* #undef _GLIBCXX_HAVE__COSHL */
+
+/* Define to 1 if you have the `_cosl' function. */
+/* #undef _GLIBCXX_HAVE__COSL */
+
+/* Define to 1 if you have the `_expf' function. */
+/* #undef _GLIBCXX_HAVE__EXPF */
+
+/* Define to 1 if you have the `_expl' function. */
+/* #undef _GLIBCXX_HAVE__EXPL */
+
+/* Define to 1 if you have the `_fabsf' function. */
+/* #undef _GLIBCXX_HAVE__FABSF */
+
+/* Define to 1 if you have the `_fabsl' function. */
+/* #undef _GLIBCXX_HAVE__FABSL */
+
+/* Define to 1 if you have the `_finite' function. */
+/* #undef _GLIBCXX_HAVE__FINITE */
+
+/* Define to 1 if you have the `_finitef' function. */
+/* #undef _GLIBCXX_HAVE__FINITEF */
+
+/* Define to 1 if you have the `_finitel' function. */
+/* #undef _GLIBCXX_HAVE__FINITEL */
+
+/* Define to 1 if you have the `_floorf' function. */
+/* #undef _GLIBCXX_HAVE__FLOORF */
+
+/* Define to 1 if you have the `_floorl' function. */
+/* #undef _GLIBCXX_HAVE__FLOORL */
+
+/* Define to 1 if you have the `_fmodf' function. */
+/* #undef _GLIBCXX_HAVE__FMODF */
+
+/* Define to 1 if you have the `_fmodl' function. */
+/* #undef _GLIBCXX_HAVE__FMODL */
+
+/* Define to 1 if you have the `_fpclass' function. */
+/* #undef _GLIBCXX_HAVE__FPCLASS */
+
+/* Define to 1 if you have the `_frexpf' function. */
+/* #undef _GLIBCXX_HAVE__FREXPF */
+
+/* Define to 1 if you have the `_frexpl' function. */
+/* #undef _GLIBCXX_HAVE__FREXPL */
+
+/* Define to 1 if you have the `_hypot' function. */
+/* #undef _GLIBCXX_HAVE__HYPOT */
+
+/* Define to 1 if you have the `_hypotf' function. */
+/* #undef _GLIBCXX_HAVE__HYPOTF */
+
+/* Define to 1 if you have the `_hypotl' function. */
+/* #undef _GLIBCXX_HAVE__HYPOTL */
+
+/* Define to 1 if you have the `_isinf' function. */
+/* #undef _GLIBCXX_HAVE__ISINF */
+
+/* Define to 1 if you have the `_isinff' function. */
+/* #undef _GLIBCXX_HAVE__ISINFF */
+
+/* Define to 1 if you have the `_isinfl' function. */
+/* #undef _GLIBCXX_HAVE__ISINFL */
+
+/* Define to 1 if you have the `_isnan' function. */
+/* #undef _GLIBCXX_HAVE__ISNAN */
+
+/* Define to 1 if you have the `_isnanf' function. */
+/* #undef _GLIBCXX_HAVE__ISNANF */
+
+/* Define to 1 if you have the `_isnanl' function. */
+/* #undef _GLIBCXX_HAVE__ISNANL */
+
+/* Define to 1 if you have the `_ldexpf' function. */
+/* #undef _GLIBCXX_HAVE__LDEXPF */
+
+/* Define to 1 if you have the `_ldexpl' function. */
+/* #undef _GLIBCXX_HAVE__LDEXPL */
+
+/* Define to 1 if you have the `_log10f' function. */
+/* #undef _GLIBCXX_HAVE__LOG10F */
+
+/* Define to 1 if you have the `_log10l' function. */
+/* #undef _GLIBCXX_HAVE__LOG10L */
+
+/* Define to 1 if you have the `_logf' function. */
+/* #undef _GLIBCXX_HAVE__LOGF */
+
+/* Define to 1 if you have the `_logl' function. */
+/* #undef _GLIBCXX_HAVE__LOGL */
+
+/* Define to 1 if you have the `_modf' function. */
+/* #undef _GLIBCXX_HAVE__MODF */
+
+/* Define to 1 if you have the `_modff' function. */
+/* #undef _GLIBCXX_HAVE__MODFF */
+
+/* Define to 1 if you have the `_modfl' function. */
+/* #undef _GLIBCXX_HAVE__MODFL */
+
+/* Define to 1 if you have the `_powf' function. */
+/* #undef _GLIBCXX_HAVE__POWF */
+
+/* Define to 1 if you have the `_powl' function. */
+/* #undef _GLIBCXX_HAVE__POWL */
+
+/* Define to 1 if you have the `_qfpclass' function. */
+/* #undef _GLIBCXX_HAVE__QFPCLASS */
+
+/* Define to 1 if you have the `_sincos' function. */
+/* #undef _GLIBCXX_HAVE__SINCOS */
+
+/* Define to 1 if you have the `_sincosf' function. */
+/* #undef _GLIBCXX_HAVE__SINCOSF */
+
+/* Define to 1 if you have the `_sincosl' function. */
+/* #undef _GLIBCXX_HAVE__SINCOSL */
+
+/* Define to 1 if you have the `_sinf' function. */
+/* #undef _GLIBCXX_HAVE__SINF */
+
+/* Define to 1 if you have the `_sinhf' function. */
+/* #undef _GLIBCXX_HAVE__SINHF */
+
+/* Define to 1 if you have the `_sinhl' function. */
+/* #undef _GLIBCXX_HAVE__SINHL */
+
+/* Define to 1 if you have the `_sinl' function. */
+/* #undef _GLIBCXX_HAVE__SINL */
+
+/* Define to 1 if you have the `_sqrtf' function. */
+/* #undef _GLIBCXX_HAVE__SQRTF */
+
+/* Define to 1 if you have the `_sqrtl' function. */
+/* #undef _GLIBCXX_HAVE__SQRTL */
+
+/* Define to 1 if you have the `_tanf' function. */
+/* #undef _GLIBCXX_HAVE__TANF */
+
+/* Define to 1 if you have the `_tanhf' function. */
+/* #undef _GLIBCXX_HAVE__TANHF */
+
+/* Define to 1 if you have the `_tanhl' function. */
+/* #undef _GLIBCXX_HAVE__TANHL */
+
+/* Define to 1 if you have the `_tanl' function. */
+/* #undef _GLIBCXX_HAVE__TANL */
+
+/* Define to 1 if you have the `_wfopen' function. */
+/* #undef _GLIBCXX_HAVE__WFOPEN */
+
+/* Define to 1 if you have the `__cxa_thread_atexit' function. */
+/* #undef _GLIBCXX_HAVE___CXA_THREAD_ATEXIT */
+
+/* Define to 1 if you have the `__cxa_thread_atexit_impl' function. */
+#define _GLIBCXX_HAVE___CXA_THREAD_ATEXIT_IMPL 1
+
+/* Define as const if the declaration of iconv() needs const. */
+#define _GLIBCXX_ICONV_CONST
+
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+ */
+#define LT_OBJDIR ".libs/"
+
+/* Name of package */
+/* #undef _GLIBCXX_PACKAGE */
+
+/* Define to the address where bug reports for this package should be sent. */
+#define _GLIBCXX_PACKAGE_BUGREPORT ""
+
+/* Define to the full name of this package. */
+#define _GLIBCXX_PACKAGE_NAME "package-unused"
+
+/* Define to the full name and version of this package. */
+#define _GLIBCXX_PACKAGE_STRING "package-unused version-unused"
+
+/* Define to the one symbol short name of this package. */
+#define _GLIBCXX_PACKAGE_TARNAME "libstdc++"
+
+/* Define to the home page for this package. */
+#define _GLIBCXX_PACKAGE_URL ""
+
+/* Define to the version of this package. */
+#define _GLIBCXX_PACKAGE__GLIBCXX_VERSION "version-unused"
+
+/* The size of `char', as computed by sizeof. */
+/* #undef SIZEOF_CHAR */
+
+/* The size of `int', as computed by sizeof. */
+/* #undef SIZEOF_INT */
+
+/* The size of `long', as computed by sizeof. */
+/* #undef SIZEOF_LONG */
+
+/* The size of `short', as computed by sizeof. */
+/* #undef SIZEOF_SHORT */
+
+/* The size of `void *', as computed by sizeof. */
+/* #undef SIZEOF_VOID_P */
+
+/* Define to 1 if you have the ANSI C header files. */
+#define STDC_HEADERS 1
+
+/* Version number of package */
+/* #undef _GLIBCXX_VERSION */
+
+/* Define if C99 functions in should be used in for
+ C++11. Using compiler builtins for these functions requires corresponding
+ C99 library functions to be present. */
+#define _GLIBCXX11_USE_C99_COMPLEX 1
+
+/* Define if C99 functions or macros in should be imported in
+ in namespace std for C++11. */
+#define _GLIBCXX11_USE_C99_MATH 1
+
+/* Define if C99 functions or macros in should be imported in
+ in namespace std for C++11. */
+#define _GLIBCXX11_USE_C99_STDIO 1
+
+/* Define if C99 functions or macros in should be imported in
+ in namespace std for C++11. */
+#define _GLIBCXX11_USE_C99_STDLIB 1
+
+/* Define if C99 functions or macros in should be imported in
+ in namespace std for C++11. */
+#define _GLIBCXX11_USE_C99_WCHAR 1
+
+/* Define if C99 functions in should be used in for
+ C++98. Using compiler builtins for these functions requires corresponding
+ C99 library functions to be present. */
+#define _GLIBCXX98_USE_C99_COMPLEX 1
+
+/* Define if C99 functions or macros in should be imported in
+ in namespace std for C++98. */
+#define _GLIBCXX98_USE_C99_MATH 1
+
+/* Define if C99 functions or macros in should be imported in
+ in namespace std for C++98. */
+#define _GLIBCXX98_USE_C99_STDIO 1
+
+/* Define if C99 functions or macros in should be imported in
+ in namespace std for C++98. */
+#define _GLIBCXX98_USE_C99_STDLIB 1
+
+/* Define if C99 functions or macros in should be imported in
+ in namespace std for C++98. */
+#define _GLIBCXX98_USE_C99_WCHAR 1
+
+/* Define if the compiler supports C++11 atomics. */
+#define _GLIBCXX_ATOMIC_BUILTINS 1
+
+/* Define to use concept checking code from the boost libraries. */
+/* #undef _GLIBCXX_CONCEPT_CHECKS */
+
+/* Define to 1 if a fully dynamic basic_string is wanted, 0 to disable,
+ undefined for platform defaults */
+#define _GLIBCXX_FULLY_DYNAMIC_STRING 0
+
+/* Define if gthreads library is available. */
+#define _GLIBCXX_HAS_GTHREADS 1
+
+/* Define to 1 if a full hosted library is built, or 0 if freestanding. */
+#define _GLIBCXX_HOSTED 1
+
+/* Define if compatibility should be provided for -mlong-double-64. */
+
+/* Define to the letter to which size_t is mangled. */
+#define _GLIBCXX_MANGLE_SIZE_T j
+
+/* Define if C99 llrint and llround functions are missing from . */
+/* #undef _GLIBCXX_NO_C99_ROUNDING_FUNCS */
+
+/* Define if ptrdiff_t is int. */
+#define _GLIBCXX_PTRDIFF_T_IS_INT 1
+
+/* Define if using setrlimit to set resource limits during "make check" */
+#define _GLIBCXX_RES_LIMITS 1
+
+/* Define if size_t is unsigned int. */
+#define _GLIBCXX_SIZE_T_IS_UINT 1
+
+/* Define to the value of the EOF integer constant. */
+#define _GLIBCXX_STDIO_EOF -1
+
+/* Define to the value of the SEEK_CUR integer constant. */
+#define _GLIBCXX_STDIO_SEEK_CUR 1
+
+/* Define to the value of the SEEK_END integer constant. */
+#define _GLIBCXX_STDIO_SEEK_END 2
+
+/* Define to use symbol versioning in the shared library. */
+#define _GLIBCXX_SYMVER 1
+
+/* Define to use darwin versioning in the shared library. */
+/* #undef _GLIBCXX_SYMVER_DARWIN */
+
+/* Define to use GNU versioning in the shared library. */
+#define _GLIBCXX_SYMVER_GNU 1
+
+/* Define to use GNU namespace versioning in the shared library. */
+/* #undef _GLIBCXX_SYMVER_GNU_NAMESPACE */
+
+/* Define to use Sun versioning in the shared library. */
+/* #undef _GLIBCXX_SYMVER_SUN */
+
+/* Define if C11 functions in should be imported into namespace std
+ in . */
+#define _GLIBCXX_USE_C11_UCHAR_CXX11 1
+
+/* Define if C99 functions or macros from , , ,
+ , and can be used or exposed. */
+#define _GLIBCXX_USE_C99 1
+
+/* Define if C99 functions in should be used in .
+ Using compiler builtins for these functions requires corresponding C99
+ library functions to be present. */
+#define _GLIBCXX_USE_C99_COMPLEX_TR1 1
+
+/* Define if C99 functions in should be imported in in
+ namespace std::tr1. */
+#define _GLIBCXX_USE_C99_CTYPE_TR1 1
+
+/* Define if C99 functions in should be imported in in
+ namespace std::tr1. */
+#define _GLIBCXX_USE_C99_FENV_TR1 1
+
+/* Define if C99 functions in should be imported in
+ in namespace std::tr1. */
+#define _GLIBCXX_USE_C99_INTTYPES_TR1 1
+
+/* Define if wchar_t C99 functions in should be imported in
+ in namespace std::tr1. */
+#define _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1 1
+
+/* Define if C99 functions or macros in should be imported in
+ in namespace std::tr1. */
+#define _GLIBCXX_USE_C99_MATH_TR1 1
+
+/* Define if C99 types in should be imported in in
+ namespace std::tr1. */
+#define _GLIBCXX_USE_C99_STDINT_TR1 1
+
+/* Defined if clock_gettime syscall has monotonic and realtime clock support.
+ */
+/* #undef _GLIBCXX_USE_CLOCK_GETTIME_SYSCALL */
+
+/* Defined if clock_gettime has monotonic clock support. */
+#define _GLIBCXX_USE_CLOCK_MONOTONIC 1
+
+/* Defined if clock_gettime has realtime clock support. */
+#define _GLIBCXX_USE_CLOCK_REALTIME 1
+
+/* Define if ISO/IEC TR 24733 decimal floating point types are supported on
+ this host. */
+#define _GLIBCXX_USE_DECIMAL_FLOAT 1
+
+/* Define if /dev/random and /dev/urandom are available for
+ std::random_device. */
+#define _GLIBCXX_USE_DEV_RANDOM 1
+
+/* Define if fchmod is available in . */
+#define _GLIBCXX_USE_FCHMOD 1
+
+/* Define if fchmodat is available in . */
+#define _GLIBCXX_USE_FCHMODAT 1
+
+/* Defined if gettimeofday is available. */
+#define _GLIBCXX_USE_GETTIMEOFDAY 1
+
+/* Define if get_nprocs is available in . */
+#define _GLIBCXX_USE_GET_NPROCS 1
+
+/* Define if __int128 is supported on this host. */
+/* #undef _GLIBCXX_USE_INT128 */
+
+/* Define if LFS support is available. */
+#define _GLIBCXX_USE_LFS 1
+
+/* Define if code specialized for long long should be used. */
+#define _GLIBCXX_USE_LONG_LONG 1
+
+/* Define if lstat is available in . */
+#define _GLIBCXX_USE_LSTAT 1
+
+/* Defined if nanosleep is available. */
+#define _GLIBCXX_USE_NANOSLEEP 1
+
+/* Define if NLS translations are to be used. */
+#define _GLIBCXX_USE_NLS 1
+
+/* Define if pthreads_num_processors_np is available in . */
+/* #undef _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP */
+
+/* Define if POSIX read/write locks are available in . */
+#define _GLIBCXX_USE_PTHREAD_RWLOCK_T 1
+
+/* Define if /dev/random and /dev/urandom are available for the random_device
+ of TR1 (Chapter 5.1). */
+#define _GLIBCXX_USE_RANDOM_TR1 1
+
+/* Define if usable realpath is available in . */
+#define _GLIBCXX_USE_REALPATH 1
+
+/* Defined if sched_yield is available. */
+#define _GLIBCXX_USE_SCHED_YIELD 1
+
+/* Define if _SC_NPROCESSORS_ONLN is available in . */
+#define _GLIBCXX_USE_SC_NPROCESSORS_ONLN 1
+
+/* Define if _SC_NPROC_ONLN is available in . */
+/* #undef _GLIBCXX_USE_SC_NPROC_ONLN */
+
+/* Define if sendfile is available in . */
+#define _GLIBCXX_USE_SENDFILE 1
+
+/* Define if struct stat has timespec members. */
+#define _GLIBCXX_USE_ST_MTIM 1
+
+/* Define if sysctl(), CTL_HW and HW_NCPU are available in . */
+/* #undef _GLIBCXX_USE_SYSCTL_HW_NCPU */
+
+/* Define if obsolescent tmpnam is available in . */
+#define _GLIBCXX_USE_TMPNAM 1
+
+/* Define if utime is available in . */
+#define _GLIBCXX_USE_UTIME 1
+
+/* Define if utimensat and UTIME_OMIT are available in and
+ AT_FDCWD in . */
+#define _GLIBCXX_USE_UTIMENSAT 1
+
+/* Define if code specialized for wchar_t should be used. */
+#define _GLIBCXX_USE_WCHAR_T 1
+
+/* Define to 1 if a verbose library is built, or 0 otherwise. */
+#define _GLIBCXX_VERBOSE 1
+
+/* Defined if as can handle rdrand. */
+#define _GLIBCXX_X86_RDRAND 1
+
+/* Define to 1 if mutex_timedlock is available. */
+#define _GTHREAD_USE_MUTEX_TIMEDLOCK 1
+
+/* Define if all C++11 floating point overloads are available in . */
+#if __cplusplus >= 201103L
+/* #undef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP */
+#endif
+
+/* Define if all C++11 integral type overloads are available in . */
+#if __cplusplus >= 201103L
+/* #undef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT */
+#endif
+
+#if defined (_GLIBCXX_HAVE__ACOSF) && ! defined (_GLIBCXX_HAVE_ACOSF)
+# define _GLIBCXX_HAVE_ACOSF 1
+# define acosf _acosf
+#endif
+
+#if defined (_GLIBCXX_HAVE__ACOSL) && ! defined (_GLIBCXX_HAVE_ACOSL)
+# define _GLIBCXX_HAVE_ACOSL 1
+# define acosl _acosl
+#endif
+
+#if defined (_GLIBCXX_HAVE__ASINF) && ! defined (_GLIBCXX_HAVE_ASINF)
+# define _GLIBCXX_HAVE_ASINF 1
+# define asinf _asinf
+#endif
+
+#if defined (_GLIBCXX_HAVE__ASINL) && ! defined (_GLIBCXX_HAVE_ASINL)
+# define _GLIBCXX_HAVE_ASINL 1
+# define asinl _asinl
+#endif
+
+#if defined (_GLIBCXX_HAVE__ATAN2F) && ! defined (_GLIBCXX_HAVE_ATAN2F)
+# define _GLIBCXX_HAVE_ATAN2F 1
+# define atan2f _atan2f
+#endif
+
+#if defined (_GLIBCXX_HAVE__ATAN2L) && ! defined (_GLIBCXX_HAVE_ATAN2L)
+# define _GLIBCXX_HAVE_ATAN2L 1
+# define atan2l _atan2l
+#endif
+
+#if defined (_GLIBCXX_HAVE__ATANF) && ! defined (_GLIBCXX_HAVE_ATANF)
+# define _GLIBCXX_HAVE_ATANF 1
+# define atanf _atanf
+#endif
+
+#if defined (_GLIBCXX_HAVE__ATANL) && ! defined (_GLIBCXX_HAVE_ATANL)
+# define _GLIBCXX_HAVE_ATANL 1
+# define atanl _atanl
+#endif
+
+#if defined (_GLIBCXX_HAVE__CEILF) && ! defined (_GLIBCXX_HAVE_CEILF)
+# define _GLIBCXX_HAVE_CEILF 1
+# define ceilf _ceilf
+#endif
+
+#if defined (_GLIBCXX_HAVE__CEILL) && ! defined (_GLIBCXX_HAVE_CEILL)
+# define _GLIBCXX_HAVE_CEILL 1
+# define ceill _ceill
+#endif
+
+#if defined (_GLIBCXX_HAVE__COSF) && ! defined (_GLIBCXX_HAVE_COSF)
+# define _GLIBCXX_HAVE_COSF 1
+# define cosf _cosf
+#endif
+
+#if defined (_GLIBCXX_HAVE__COSHF) && ! defined (_GLIBCXX_HAVE_COSHF)
+# define _GLIBCXX_HAVE_COSHF 1
+# define coshf _coshf
+#endif
+
+#if defined (_GLIBCXX_HAVE__COSHL) && ! defined (_GLIBCXX_HAVE_COSHL)
+# define _GLIBCXX_HAVE_COSHL 1
+# define coshl _coshl
+#endif
+
+#if defined (_GLIBCXX_HAVE__COSL) && ! defined (_GLIBCXX_HAVE_COSL)
+# define _GLIBCXX_HAVE_COSL 1
+# define cosl _cosl
+#endif
+
+#if defined (_GLIBCXX_HAVE__EXPF) && ! defined (_GLIBCXX_HAVE_EXPF)
+# define _GLIBCXX_HAVE_EXPF 1
+# define expf _expf
+#endif
+
+#if defined (_GLIBCXX_HAVE__EXPL) && ! defined (_GLIBCXX_HAVE_EXPL)
+# define _GLIBCXX_HAVE_EXPL 1
+# define expl _expl
+#endif
+
+#if defined (_GLIBCXX_HAVE__FABSF) && ! defined (_GLIBCXX_HAVE_FABSF)
+# define _GLIBCXX_HAVE_FABSF 1
+# define fabsf _fabsf
+#endif
+
+#if defined (_GLIBCXX_HAVE__FABSL) && ! defined (_GLIBCXX_HAVE_FABSL)
+# define _GLIBCXX_HAVE_FABSL 1
+# define fabsl _fabsl
+#endif
+
+#if defined (_GLIBCXX_HAVE__FINITE) && ! defined (_GLIBCXX_HAVE_FINITE)
+# define _GLIBCXX_HAVE_FINITE 1
+# define finite _finite
+#endif
+
+#if defined (_GLIBCXX_HAVE__FINITEF) && ! defined (_GLIBCXX_HAVE_FINITEF)
+# define _GLIBCXX_HAVE_FINITEF 1
+# define finitef _finitef
+#endif
+
+#if defined (_GLIBCXX_HAVE__FINITEL) && ! defined (_GLIBCXX_HAVE_FINITEL)
+# define _GLIBCXX_HAVE_FINITEL 1
+# define finitel _finitel
+#endif
+
+#if defined (_GLIBCXX_HAVE__FLOORF) && ! defined (_GLIBCXX_HAVE_FLOORF)
+# define _GLIBCXX_HAVE_FLOORF 1
+# define floorf _floorf
+#endif
+
+#if defined (_GLIBCXX_HAVE__FLOORL) && ! defined (_GLIBCXX_HAVE_FLOORL)
+# define _GLIBCXX_HAVE_FLOORL 1
+# define floorl _floorl
+#endif
+
+#if defined (_GLIBCXX_HAVE__FMODF) && ! defined (_GLIBCXX_HAVE_FMODF)
+# define _GLIBCXX_HAVE_FMODF 1
+# define fmodf _fmodf
+#endif
+
+#if defined (_GLIBCXX_HAVE__FMODL) && ! defined (_GLIBCXX_HAVE_FMODL)
+# define _GLIBCXX_HAVE_FMODL 1
+# define fmodl _fmodl
+#endif
+
+#if defined (_GLIBCXX_HAVE__FPCLASS) && ! defined (_GLIBCXX_HAVE_FPCLASS)
+# define _GLIBCXX_HAVE_FPCLASS 1
+# define fpclass _fpclass
+#endif
+
+#if defined (_GLIBCXX_HAVE__FREXPF) && ! defined (_GLIBCXX_HAVE_FREXPF)
+# define _GLIBCXX_HAVE_FREXPF 1
+# define frexpf _frexpf
+#endif
+
+#if defined (_GLIBCXX_HAVE__FREXPL) && ! defined (_GLIBCXX_HAVE_FREXPL)
+# define _GLIBCXX_HAVE_FREXPL 1
+# define frexpl _frexpl
+#endif
+
+#if defined (_GLIBCXX_HAVE__HYPOT) && ! defined (_GLIBCXX_HAVE_HYPOT)
+# define _GLIBCXX_HAVE_HYPOT 1
+# define hypot _hypot
+#endif
+
+#if defined (_GLIBCXX_HAVE__HYPOTF) && ! defined (_GLIBCXX_HAVE_HYPOTF)
+# define _GLIBCXX_HAVE_HYPOTF 1
+# define hypotf _hypotf
+#endif
+
+#if defined (_GLIBCXX_HAVE__HYPOTL) && ! defined (_GLIBCXX_HAVE_HYPOTL)
+# define _GLIBCXX_HAVE_HYPOTL 1
+# define hypotl _hypotl
+#endif
+
+#if defined (_GLIBCXX_HAVE__ISINF) && ! defined (_GLIBCXX_HAVE_ISINF)
+# define _GLIBCXX_HAVE_ISINF 1
+# define isinf _isinf
+#endif
+
+#if defined (_GLIBCXX_HAVE__ISINFF) && ! defined (_GLIBCXX_HAVE_ISINFF)
+# define _GLIBCXX_HAVE_ISINFF 1
+# define isinff _isinff
+#endif
+
+#if defined (_GLIBCXX_HAVE__ISINFL) && ! defined (_GLIBCXX_HAVE_ISINFL)
+# define _GLIBCXX_HAVE_ISINFL 1
+# define isinfl _isinfl
+#endif
+
+#if defined (_GLIBCXX_HAVE__ISNAN) && ! defined (_GLIBCXX_HAVE_ISNAN)
+# define _GLIBCXX_HAVE_ISNAN 1
+# define isnan _isnan
+#endif
+
+#if defined (_GLIBCXX_HAVE__ISNANF) && ! defined (_GLIBCXX_HAVE_ISNANF)
+# define _GLIBCXX_HAVE_ISNANF 1
+# define isnanf _isnanf
+#endif
+
+#if defined (_GLIBCXX_HAVE__ISNANL) && ! defined (_GLIBCXX_HAVE_ISNANL)
+# define _GLIBCXX_HAVE_ISNANL 1
+# define isnanl _isnanl
+#endif
+
+#if defined (_GLIBCXX_HAVE__LDEXPF) && ! defined (_GLIBCXX_HAVE_LDEXPF)
+# define _GLIBCXX_HAVE_LDEXPF 1
+# define ldexpf _ldexpf
+#endif
+
+#if defined (_GLIBCXX_HAVE__LDEXPL) && ! defined (_GLIBCXX_HAVE_LDEXPL)
+# define _GLIBCXX_HAVE_LDEXPL 1
+# define ldexpl _ldexpl
+#endif
+
+#if defined (_GLIBCXX_HAVE__LOG10F) && ! defined (_GLIBCXX_HAVE_LOG10F)
+# define _GLIBCXX_HAVE_LOG10F 1
+# define log10f _log10f
+#endif
+
+#if defined (_GLIBCXX_HAVE__LOG10L) && ! defined (_GLIBCXX_HAVE_LOG10L)
+# define _GLIBCXX_HAVE_LOG10L 1
+# define log10l _log10l
+#endif
+
+#if defined (_GLIBCXX_HAVE__LOGF) && ! defined (_GLIBCXX_HAVE_LOGF)
+# define _GLIBCXX_HAVE_LOGF 1
+# define logf _logf
+#endif
+
+#if defined (_GLIBCXX_HAVE__LOGL) && ! defined (_GLIBCXX_HAVE_LOGL)
+# define _GLIBCXX_HAVE_LOGL 1
+# define logl _logl
+#endif
+
+#if defined (_GLIBCXX_HAVE__MODF) && ! defined (_GLIBCXX_HAVE_MODF)
+# define _GLIBCXX_HAVE_MODF 1
+# define modf _modf
+#endif
+
+#if defined (_GLIBCXX_HAVE__MODFF) && ! defined (_GLIBCXX_HAVE_MODFF)
+# define _GLIBCXX_HAVE_MODFF 1
+# define modff _modff
+#endif
+
+#if defined (_GLIBCXX_HAVE__MODFL) && ! defined (_GLIBCXX_HAVE_MODFL)
+# define _GLIBCXX_HAVE_MODFL 1
+# define modfl _modfl
+#endif
+
+#if defined (_GLIBCXX_HAVE__POWF) && ! defined (_GLIBCXX_HAVE_POWF)
+# define _GLIBCXX_HAVE_POWF 1
+# define powf _powf
+#endif
+
+#if defined (_GLIBCXX_HAVE__POWL) && ! defined (_GLIBCXX_HAVE_POWL)
+# define _GLIBCXX_HAVE_POWL 1
+# define powl _powl
+#endif
+
+#if defined (_GLIBCXX_HAVE__QFPCLASS) && ! defined (_GLIBCXX_HAVE_QFPCLASS)
+# define _GLIBCXX_HAVE_QFPCLASS 1
+# define qfpclass _qfpclass
+#endif
+
+#if defined (_GLIBCXX_HAVE__SINCOS) && ! defined (_GLIBCXX_HAVE_SINCOS)
+# define _GLIBCXX_HAVE_SINCOS 1
+# define sincos _sincos
+#endif
+
+#if defined (_GLIBCXX_HAVE__SINCOSF) && ! defined (_GLIBCXX_HAVE_SINCOSF)
+# define _GLIBCXX_HAVE_SINCOSF 1
+# define sincosf _sincosf
+#endif
+
+#if defined (_GLIBCXX_HAVE__SINCOSL) && ! defined (_GLIBCXX_HAVE_SINCOSL)
+# define _GLIBCXX_HAVE_SINCOSL 1
+# define sincosl _sincosl
+#endif
+
+#if defined (_GLIBCXX_HAVE__SINF) && ! defined (_GLIBCXX_HAVE_SINF)
+# define _GLIBCXX_HAVE_SINF 1
+# define sinf _sinf
+#endif
+
+#if defined (_GLIBCXX_HAVE__SINHF) && ! defined (_GLIBCXX_HAVE_SINHF)
+# define _GLIBCXX_HAVE_SINHF 1
+# define sinhf _sinhf
+#endif
+
+#if defined (_GLIBCXX_HAVE__SINHL) && ! defined (_GLIBCXX_HAVE_SINHL)
+# define _GLIBCXX_HAVE_SINHL 1
+# define sinhl _sinhl
+#endif
+
+#if defined (_GLIBCXX_HAVE__SINL) && ! defined (_GLIBCXX_HAVE_SINL)
+# define _GLIBCXX_HAVE_SINL 1
+# define sinl _sinl
+#endif
+
+#if defined (_GLIBCXX_HAVE__SQRTF) && ! defined (_GLIBCXX_HAVE_SQRTF)
+# define _GLIBCXX_HAVE_SQRTF 1
+# define sqrtf _sqrtf
+#endif
+
+#if defined (_GLIBCXX_HAVE__SQRTL) && ! defined (_GLIBCXX_HAVE_SQRTL)
+# define _GLIBCXX_HAVE_SQRTL 1
+# define sqrtl _sqrtl
+#endif
+
+#if defined (_GLIBCXX_HAVE__STRTOF) && ! defined (_GLIBCXX_HAVE_STRTOF)
+# define _GLIBCXX_HAVE_STRTOF 1
+# define strtof _strtof
+#endif
+
+#if defined (_GLIBCXX_HAVE__STRTOLD) && ! defined (_GLIBCXX_HAVE_STRTOLD)
+# define _GLIBCXX_HAVE_STRTOLD 1
+# define strtold _strtold
+#endif
+
+#if defined (_GLIBCXX_HAVE__TANF) && ! defined (_GLIBCXX_HAVE_TANF)
+# define _GLIBCXX_HAVE_TANF 1
+# define tanf _tanf
+#endif
+
+#if defined (_GLIBCXX_HAVE__TANHF) && ! defined (_GLIBCXX_HAVE_TANHF)
+# define _GLIBCXX_HAVE_TANHF 1
+# define tanhf _tanhf
+#endif
+
+#if defined (_GLIBCXX_HAVE__TANHL) && ! defined (_GLIBCXX_HAVE_TANHL)
+# define _GLIBCXX_HAVE_TANHL 1
+# define tanhl _tanhl
+#endif
+
+#if defined (_GLIBCXX_HAVE__TANL) && ! defined (_GLIBCXX_HAVE_TANL)
+# define _GLIBCXX_HAVE_TANL 1
+# define tanl _tanl
+#endif
+
+#endif // _GLIBCXX_CXX_CONFIG_H
+#else
+// Predefined symbols and macros -*- C++ -*-
+
+// Copyright (C) 1997-2019 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// .
+
+/** @file bits/c++config.h
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{version}
+ */
+
+#ifndef _GLIBCXX_CXX_CONFIG_H
+#define _GLIBCXX_CXX_CONFIG_H 1
+
+// The major release number for the GCC release the C++ library belongs to.
+#define _GLIBCXX_RELEASE 9
+
+// The datestamp of the C++ library in compressed ISO date format.
+#define __GLIBCXX__ 20190827
+
+// Macros for various attributes.
+// _GLIBCXX_PURE
+// _GLIBCXX_CONST
+// _GLIBCXX_NORETURN
+// _GLIBCXX_NOTHROW
+// _GLIBCXX_VISIBILITY
+#ifndef _GLIBCXX_PURE
+# define _GLIBCXX_PURE __attribute__ ((__pure__))
+#endif
+
+#ifndef _GLIBCXX_CONST
+# define _GLIBCXX_CONST __attribute__ ((__const__))
+#endif
+
+#ifndef _GLIBCXX_NORETURN
+# define _GLIBCXX_NORETURN __attribute__ ((__noreturn__))
+#endif
+
+// See below for C++
+#ifndef _GLIBCXX_NOTHROW
+# ifndef __cplusplus
+# define _GLIBCXX_NOTHROW __attribute__((__nothrow__))
+# endif
+#endif
+
+// Macros for visibility attributes.
+// _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
+// _GLIBCXX_VISIBILITY
+# define _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY 1
+
+#if _GLIBCXX_HAVE_ATTRIBUTE_VISIBILITY
+# define _GLIBCXX_VISIBILITY(V) __attribute__ ((__visibility__ (#V)))
+#else
+// If this is not supplied by the OS-specific or CPU-specific
+// headers included below, it will be defined to an empty default.
+# define _GLIBCXX_VISIBILITY(V) _GLIBCXX_PSEUDO_VISIBILITY(V)
+#endif
+
+// Macros for deprecated attributes.
+// _GLIBCXX_USE_DEPRECATED
+// _GLIBCXX_DEPRECATED
+// _GLIBCXX17_DEPRECATED
+#ifndef _GLIBCXX_USE_DEPRECATED
+# define _GLIBCXX_USE_DEPRECATED 1
+#endif
+
+#if defined(__DEPRECATED) && (__cplusplus >= 201103L)
+# define _GLIBCXX_DEPRECATED __attribute__ ((__deprecated__))
+#else
+# define _GLIBCXX_DEPRECATED
+#endif
+
+#if defined(__DEPRECATED) && (__cplusplus >= 201703L)
+# define _GLIBCXX17_DEPRECATED [[__deprecated__]]
+#else
+# define _GLIBCXX17_DEPRECATED
+#endif
+
+// Macros for ABI tag attributes.
+#ifndef _GLIBCXX_ABI_TAG_CXX11
+# define _GLIBCXX_ABI_TAG_CXX11 __attribute ((__abi_tag__ ("cxx11")))
+#endif
+
+// Macro to warn about unused results.
+#if __cplusplus >= 201703L
+# define _GLIBCXX_NODISCARD [[__nodiscard__]]
+#else
+# define _GLIBCXX_NODISCARD
+#endif
+
+
+
+#if __cplusplus
+
+// Macro for constexpr, to support in mixed 03/0x mode.
+#ifndef _GLIBCXX_CONSTEXPR
+# if __cplusplus >= 201103L
+# define _GLIBCXX_CONSTEXPR constexpr
+# define _GLIBCXX_USE_CONSTEXPR constexpr
+# else
+# define _GLIBCXX_CONSTEXPR
+# define _GLIBCXX_USE_CONSTEXPR const
+# endif
+#endif
+
+#ifndef _GLIBCXX14_CONSTEXPR
+# if __cplusplus >= 201402L
+# define _GLIBCXX14_CONSTEXPR constexpr
+# else
+# define _GLIBCXX14_CONSTEXPR
+# endif
+#endif
+
+#ifndef _GLIBCXX17_CONSTEXPR
+# if __cplusplus >= 201703L
+# define _GLIBCXX17_CONSTEXPR constexpr
+# else
+# define _GLIBCXX17_CONSTEXPR
+# endif
+#endif
+
+#ifndef _GLIBCXX20_CONSTEXPR
+# if __cplusplus > 201703L
+# define _GLIBCXX20_CONSTEXPR constexpr
+# else
+# define _GLIBCXX20_CONSTEXPR
+# endif
+#endif
+
+#ifndef _GLIBCXX17_INLINE
+# if __cplusplus >= 201703L
+# define _GLIBCXX17_INLINE inline
+# else
+# define _GLIBCXX17_INLINE
+# endif
+#endif
+
+// Macro for noexcept, to support in mixed 03/0x mode.
+#ifndef _GLIBCXX_NOEXCEPT
+# if __cplusplus >= 201103L
+# define _GLIBCXX_NOEXCEPT noexcept
+# define _GLIBCXX_NOEXCEPT_IF(_COND) noexcept(_COND)
+# define _GLIBCXX_USE_NOEXCEPT noexcept
+# define _GLIBCXX_THROW(_EXC)
+# else
+# define _GLIBCXX_NOEXCEPT
+# define _GLIBCXX_NOEXCEPT_IF(_COND)
+# define _GLIBCXX_USE_NOEXCEPT throw()
+# define _GLIBCXX_THROW(_EXC) throw(_EXC)
+# endif
+#endif
+
+#ifndef _GLIBCXX_NOTHROW
+# define _GLIBCXX_NOTHROW _GLIBCXX_USE_NOEXCEPT
+#endif
+
+#ifndef _GLIBCXX_THROW_OR_ABORT
+# if __cpp_exceptions
+# define _GLIBCXX_THROW_OR_ABORT(_EXC) (throw (_EXC))
+# else
+# define _GLIBCXX_THROW_OR_ABORT(_EXC) (__builtin_abort())
+# endif
+#endif
+
+#if __cpp_noexcept_function_type
+#define _GLIBCXX_NOEXCEPT_PARM , bool _NE
+#define _GLIBCXX_NOEXCEPT_QUAL noexcept (_NE)
+#else
+#define _GLIBCXX_NOEXCEPT_PARM
+#define _GLIBCXX_NOEXCEPT_QUAL
+#endif
+
+// Macro for extern template, ie controlling template linkage via use
+// of extern keyword on template declaration. As documented in the g++
+// manual, it inhibits all implicit instantiations and is used
+// throughout the library to avoid multiple weak definitions for
+// required types that are already explicitly instantiated in the
+// library binary. This substantially reduces the binary size of
+// resulting executables.
+// Special case: _GLIBCXX_EXTERN_TEMPLATE == -1 disallows extern
+// templates only in basic_string, thus activating its debug-mode
+// checks even at -O0.
+# define _GLIBCXX_EXTERN_TEMPLATE 1
+
+/*
+ Outline of libstdc++ namespaces.
+
+ namespace std
+ {
+ namespace __debug { }
+ namespace __parallel { }
+ namespace __profile { }
+ namespace __cxx1998 { }
+
+ namespace __detail {
+ namespace __variant { } // C++17
+ }
+
+ namespace rel_ops { }
+
+ namespace tr1
+ {
+ namespace placeholders { }
+ namespace regex_constants { }
+ namespace __detail { }
+ }
+
+ namespace tr2 { }
+
+ namespace decimal { }
+
+ namespace chrono { } // C++11
+ namespace placeholders { } // C++11
+ namespace regex_constants { } // C++11
+ namespace this_thread { } // C++11
+ inline namespace literals { // C++14
+ inline namespace chrono_literals { } // C++14
+ inline namespace complex_literals { } // C++14
+ inline namespace string_literals { } // C++14
+ inline namespace string_view_literals { } // C++17
+ }
+ }
+
+ namespace abi { }
+
+ namespace __gnu_cxx
+ {
+ namespace __detail { }
+ }
+
+ For full details see:
+ http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/namespaces.html
+*/
+namespace std
+{
+ typedef __SIZE_TYPE__ size_t;
+ typedef __PTRDIFF_TYPE__ ptrdiff_t;
+
+#if __cplusplus >= 201103L
+ typedef decltype(nullptr) nullptr_t;
+#endif
+}
+
+# define _GLIBCXX_USE_DUAL_ABI 1
+
+#if ! _GLIBCXX_USE_DUAL_ABI
+// Ignore any pre-defined value of _GLIBCXX_USE_CXX11_ABI
+# undef _GLIBCXX_USE_CXX11_ABI
+#endif
+
+#ifndef _GLIBCXX_USE_CXX11_ABI
+# define _GLIBCXX_USE_CXX11_ABI 1
+#endif
+
+#if _GLIBCXX_USE_CXX11_ABI
+namespace std
+{
+ inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
+}
+namespace __gnu_cxx
+{
+ inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
+}
+# define _GLIBCXX_NAMESPACE_CXX11 __cxx11::
+# define _GLIBCXX_BEGIN_NAMESPACE_CXX11 namespace __cxx11 {
+# define _GLIBCXX_END_NAMESPACE_CXX11 }
+# define _GLIBCXX_DEFAULT_ABI_TAG _GLIBCXX_ABI_TAG_CXX11
+#else
+# define _GLIBCXX_NAMESPACE_CXX11
+# define _GLIBCXX_BEGIN_NAMESPACE_CXX11
+# define _GLIBCXX_END_NAMESPACE_CXX11
+# define _GLIBCXX_DEFAULT_ABI_TAG
+#endif
+
+// Defined if inline namespaces are used for versioning.
+# define _GLIBCXX_INLINE_VERSION 0
+
+// Inline namespace for symbol versioning.
+#if _GLIBCXX_INLINE_VERSION
+# define _GLIBCXX_BEGIN_NAMESPACE_VERSION namespace __8 {
+# define _GLIBCXX_END_NAMESPACE_VERSION }
+
+namespace std
+{
+inline _GLIBCXX_BEGIN_NAMESPACE_VERSION
+#if __cplusplus >= 201402L
+ inline namespace literals {
+ inline namespace chrono_literals { }
+ inline namespace complex_literals { }
+ inline namespace string_literals { }
+#if __cplusplus > 201402L
+ inline namespace string_view_literals { }
+#endif // C++17
+ }
+#endif // C++14
+_GLIBCXX_END_NAMESPACE_VERSION
+}
+
+namespace __gnu_cxx
+{
+inline _GLIBCXX_BEGIN_NAMESPACE_VERSION
+_GLIBCXX_END_NAMESPACE_VERSION
+}
+
+#else
+# define _GLIBCXX_BEGIN_NAMESPACE_VERSION
+# define _GLIBCXX_END_NAMESPACE_VERSION
+#endif
+
+// Inline namespaces for special modes: debug, parallel, profile.
+#if defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PARALLEL) \
+ || defined(_GLIBCXX_PROFILE)
+namespace std
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ // Non-inline namespace for components replaced by alternates in active mode.
+ namespace __cxx1998
+ {
+# if _GLIBCXX_USE_CXX11_ABI
+ inline namespace __cxx11 __attribute__((__abi_tag__ ("cxx11"))) { }
+# endif
+ }
+
+_GLIBCXX_END_NAMESPACE_VERSION
+
+ // Inline namespace for debug mode.
+# ifdef _GLIBCXX_DEBUG
+ inline namespace __debug { }
+# endif
+
+ // Inline namespaces for parallel mode.
+# ifdef _GLIBCXX_PARALLEL
+ inline namespace __parallel { }
+# endif
+
+ // Inline namespaces for profile mode
+# ifdef _GLIBCXX_PROFILE
+ inline namespace __profile { }
+# endif
+}
+
+// Check for invalid usage and unsupported mixed-mode use.
+# if defined(_GLIBCXX_DEBUG) && defined(_GLIBCXX_PARALLEL)
+# error illegal use of multiple inlined namespaces
+# endif
+# if defined(_GLIBCXX_PROFILE) && defined(_GLIBCXX_DEBUG)
+# error illegal use of multiple inlined namespaces
+# endif
+# if defined(_GLIBCXX_PROFILE) && defined(_GLIBCXX_PARALLEL)
+# error illegal use of multiple inlined namespaces
+# endif
+
+// Check for invalid use due to lack for weak symbols.
+# if __NO_INLINE__ && !__GXX_WEAK__
+# warning currently using inlined namespace mode which may fail \
+ without inlining due to lack of weak symbols
+# endif
+#endif
+
+// Macros for namespace scope. Either namespace std:: or the name
+// of some nested namespace within it corresponding to the active mode.
+// _GLIBCXX_STD_A
+// _GLIBCXX_STD_C
+//
+// Macros for opening/closing conditional namespaces.
+// _GLIBCXX_BEGIN_NAMESPACE_ALGO
+// _GLIBCXX_END_NAMESPACE_ALGO
+// _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
+// _GLIBCXX_END_NAMESPACE_CONTAINER
+#if defined(_GLIBCXX_DEBUG) || defined(_GLIBCXX_PROFILE)
+# define _GLIBCXX_STD_C __cxx1998
+# define _GLIBCXX_BEGIN_NAMESPACE_CONTAINER \
+ namespace _GLIBCXX_STD_C {
+# define _GLIBCXX_END_NAMESPACE_CONTAINER }
+#else
+# define _GLIBCXX_STD_C std
+# define _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
+# define _GLIBCXX_END_NAMESPACE_CONTAINER
+#endif
+
+#ifdef _GLIBCXX_PARALLEL
+# define _GLIBCXX_STD_A __cxx1998
+# define _GLIBCXX_BEGIN_NAMESPACE_ALGO \
+ namespace _GLIBCXX_STD_A {
+# define _GLIBCXX_END_NAMESPACE_ALGO }
+#else
+# define _GLIBCXX_STD_A std
+# define _GLIBCXX_BEGIN_NAMESPACE_ALGO
+# define _GLIBCXX_END_NAMESPACE_ALGO
+#endif
+
+// GLIBCXX_ABI Deprecated
+// Define if compatibility should be provided for -mlong-double-64.
+#undef _GLIBCXX_LONG_DOUBLE_COMPAT
+
+// Inline namespace for long double 128 mode.
+#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
+namespace std
+{
+ inline namespace __gnu_cxx_ldbl128 { }
+}
+# define _GLIBCXX_NAMESPACE_LDBL __gnu_cxx_ldbl128::
+# define _GLIBCXX_BEGIN_NAMESPACE_LDBL namespace __gnu_cxx_ldbl128 {
+# define _GLIBCXX_END_NAMESPACE_LDBL }
+#else
+# define _GLIBCXX_NAMESPACE_LDBL
+# define _GLIBCXX_BEGIN_NAMESPACE_LDBL
+# define _GLIBCXX_END_NAMESPACE_LDBL
+#endif
+#if _GLIBCXX_USE_CXX11_ABI
+# define _GLIBCXX_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_NAMESPACE_CXX11
+# define _GLIBCXX_BEGIN_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_BEGIN_NAMESPACE_CXX11
+# define _GLIBCXX_END_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_END_NAMESPACE_CXX11
+#else
+# define _GLIBCXX_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_NAMESPACE_LDBL
+# define _GLIBCXX_BEGIN_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_BEGIN_NAMESPACE_LDBL
+# define _GLIBCXX_END_NAMESPACE_LDBL_OR_CXX11 _GLIBCXX_END_NAMESPACE_LDBL
+#endif
+
+// Debug Mode implies checking assertions.
+#if defined(_GLIBCXX_DEBUG) && !defined(_GLIBCXX_ASSERTIONS)
+# define _GLIBCXX_ASSERTIONS 1
+#endif
+
+// Disable std::string explicit instantiation declarations in order to assert.
+#ifdef _GLIBCXX_ASSERTIONS
+# undef _GLIBCXX_EXTERN_TEMPLATE
+# define _GLIBCXX_EXTERN_TEMPLATE -1
+#endif
+
+// Assert.
+#if defined(_GLIBCXX_ASSERTIONS) \
+ || defined(_GLIBCXX_PARALLEL) || defined(_GLIBCXX_PARALLEL_ASSERTIONS)
+namespace std
+{
+ // Avoid the use of assert, because we're trying to keep the
+ // include out of the mix.
+ extern "C++" inline void
+ __replacement_assert(const char* __file, int __line,
+ const char* __function, const char* __condition)
+ {
+ __builtin_printf("%s:%d: %s: Assertion '%s' failed.\n", __file, __line,
+ __function, __condition);
+ __builtin_abort();
+ }
+}
+#define __glibcxx_assert_impl(_Condition) \
+ do \
+ { \
+ if (! (_Condition)) \
+ std::__replacement_assert(__FILE__, __LINE__, __PRETTY_FUNCTION__, \
+ #_Condition); \
+ } while (false)
+#endif
+
+#if defined(_GLIBCXX_ASSERTIONS)
+# define __glibcxx_assert(_Condition) __glibcxx_assert_impl(_Condition)
+#else
+# define __glibcxx_assert(_Condition)
+#endif
+
+// Macros for race detectors.
+// _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(A) and
+// _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A) should be used to explain
+// atomic (lock-free) synchronization to race detectors:
+// the race detector will infer a happens-before arc from the former to the
+// latter when they share the same argument pointer.
+//
+// The most frequent use case for these macros (and the only case in the
+// current implementation of the library) is atomic reference counting:
+// void _M_remove_reference()
+// {
+// _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(&this->_M_refcount);
+// if (__gnu_cxx::__exchange_and_add_dispatch(&this->_M_refcount, -1) <= 0)
+// {
+// _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(&this->_M_refcount);
+// _M_destroy(__a);
+// }
+// }
+// The annotations in this example tell the race detector that all memory
+// accesses occurred when the refcount was positive do not race with
+// memory accesses which occurred after the refcount became zero.
+#ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE
+# define _GLIBCXX_SYNCHRONIZATION_HAPPENS_BEFORE(A)
+#endif
+#ifndef _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER
+# define _GLIBCXX_SYNCHRONIZATION_HAPPENS_AFTER(A)
+#endif
+
+// Macros for C linkage: define extern "C" linkage only when using C++.
+# define _GLIBCXX_BEGIN_EXTERN_C extern "C" {
+# define _GLIBCXX_END_EXTERN_C }
+
+# define _GLIBCXX_USE_ALLOCATOR_NEW 1
+
+#else // !__cplusplus
+# define _GLIBCXX_BEGIN_EXTERN_C
+# define _GLIBCXX_END_EXTERN_C
+#endif
+
+
+// First includes.
+
+// Pick up any OS-specific definitions.
+#include
+
+// Pick up any CPU-specific definitions.
+#include
+
+// If platform uses neither visibility nor psuedo-visibility,
+// specify empty default for namespace annotation macros.
+#ifndef _GLIBCXX_PSEUDO_VISIBILITY
+# define _GLIBCXX_PSEUDO_VISIBILITY(V)
+#endif
+
+// Certain function definitions that are meant to be overridable from
+// user code are decorated with this macro. For some targets, this
+// macro causes these definitions to be weak.
+#ifndef _GLIBCXX_WEAK_DEFINITION
+# define _GLIBCXX_WEAK_DEFINITION
+#endif
+
+// By default, we assume that __GXX_WEAK__ also means that there is support
+// for declaring functions as weak while not defining such functions. This
+// allows for referring to functions provided by other libraries (e.g.,
+// libitm) without depending on them if the respective features are not used.
+#ifndef _GLIBCXX_USE_WEAK_REF
+# define _GLIBCXX_USE_WEAK_REF __GXX_WEAK__
+#endif
+
+// Conditionally enable annotations for the Transactional Memory TS on C++11.
+// Most of the following conditions are due to limitations in the current
+// implementation.
+#if __cplusplus >= 201103L && _GLIBCXX_USE_CXX11_ABI \
+ && _GLIBCXX_USE_DUAL_ABI && __cpp_transactional_memory >= 201500L \
+ && !_GLIBCXX_FULLY_DYNAMIC_STRING && _GLIBCXX_USE_WEAK_REF \
+ && _GLIBCXX_USE_ALLOCATOR_NEW
+#define _GLIBCXX_TXN_SAFE transaction_safe
+#define _GLIBCXX_TXN_SAFE_DYN transaction_safe_dynamic
+#else
+#define _GLIBCXX_TXN_SAFE
+#define _GLIBCXX_TXN_SAFE_DYN
+#endif
+
+#if __cplusplus > 201402L
+// In C++17 mathematical special functions are in namespace std.
+# define _GLIBCXX_USE_STD_SPEC_FUNCS 1
+#elif __cplusplus >= 201103L && __STDCPP_WANT_MATH_SPEC_FUNCS__ != 0
+// For C++11 and C++14 they are in namespace std when requested.
+# define _GLIBCXX_USE_STD_SPEC_FUNCS 1
+#endif
+
+// The remainder of the prewritten config is automatic; all the
+// user hooks are listed above.
+
+// Create a boolean flag to be used to determine if --fast-math is set.
+#ifdef __FAST_MATH__
+# define _GLIBCXX_FAST_MATH 1
+#else
+# define _GLIBCXX_FAST_MATH 0
+#endif
+
+// This marks string literals in header files to be extracted for eventual
+// translation. It is primarily used for messages in thrown exceptions; see
+// src/functexcept.cc. We use __N because the more traditional _N is used
+// for something else under certain OSes (see BADNAMES).
+#define __N(msgid) (msgid)
+
+// For example, is known to #define min and max as macros...
+#undef min
+#undef max
+
+// N.B. these _GLIBCXX_USE_C99_XXX macros are defined unconditionally
+// so they should be tested with #if not with #ifdef.
+#if __cplusplus >= 201103L
+# ifndef _GLIBCXX_USE_C99_MATH
+# define _GLIBCXX_USE_C99_MATH _GLIBCXX11_USE_C99_MATH
+# endif
+# ifndef _GLIBCXX_USE_C99_COMPLEX
+# define _GLIBCXX_USE_C99_COMPLEX _GLIBCXX11_USE_C99_COMPLEX
+# endif
+# ifndef _GLIBCXX_USE_C99_STDIO
+# define _GLIBCXX_USE_C99_STDIO _GLIBCXX11_USE_C99_STDIO
+# endif
+# ifndef _GLIBCXX_USE_C99_STDLIB
+# define _GLIBCXX_USE_C99_STDLIB _GLIBCXX11_USE_C99_STDLIB
+# endif
+# ifndef _GLIBCXX_USE_C99_WCHAR
+# define _GLIBCXX_USE_C99_WCHAR _GLIBCXX11_USE_C99_WCHAR
+# endif
+#else
+# ifndef _GLIBCXX_USE_C99_MATH
+# define _GLIBCXX_USE_C99_MATH _GLIBCXX98_USE_C99_MATH
+# endif
+# ifndef _GLIBCXX_USE_C99_COMPLEX
+# define _GLIBCXX_USE_C99_COMPLEX _GLIBCXX98_USE_C99_COMPLEX
+# endif
+# ifndef _GLIBCXX_USE_C99_STDIO
+# define _GLIBCXX_USE_C99_STDIO _GLIBCXX98_USE_C99_STDIO
+# endif
+# ifndef _GLIBCXX_USE_C99_STDLIB
+# define _GLIBCXX_USE_C99_STDLIB _GLIBCXX98_USE_C99_STDLIB
+# endif
+# ifndef _GLIBCXX_USE_C99_WCHAR
+# define _GLIBCXX_USE_C99_WCHAR _GLIBCXX98_USE_C99_WCHAR
+# endif
+#endif
+
+// Unless explicitly specified, enable char8_t extensions only if the core
+// language char8_t feature macro is defined.
+#ifndef _GLIBCXX_USE_CHAR8_T
+# ifdef __cpp_char8_t
+# define _GLIBCXX_USE_CHAR8_T 1
+# endif
+#endif
+#ifdef _GLIBCXX_USE_CHAR8_T
+# define __cpp_lib_char8_t 201811L
+#endif
+
+/* Define if __float128 is supported on this host. */
+#if defined(__FLOAT128__) || defined(__SIZEOF_FLOAT128__)
+#define _GLIBCXX_USE_FLOAT128 1
+#endif
+
+#if __GNUC__ >= 7
+// Assume these are available if the compiler claims to be a recent GCC:
+# define _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP 1
+# define _GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE 1
+# define _GLIBCXX_HAVE_BUILTIN_LAUNDER 1
+# if __GNUC__ >= 9
+# define _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED 1
+# endif
+#elif defined(__is_identifier) && defined(__has_builtin)
+// For non-GNU compilers:
+# if ! __is_identifier(__has_unique_object_representations)
+# define _GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP 1
+# endif
+# if ! __is_identifier(__is_aggregate)
+# define _GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE 1
+# endif
+# if __has_builtin(__builtin_launder)
+# define _GLIBCXX_HAVE_BUILTIN_LAUNDER 1
+# endif
+# if __has_builtin(__builtin_is_constant_evaluated)
+# define _GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED 1
+# endif
+#endif // GCC
+
+// PSTL configuration
+
+#if __cplusplus >= 201703L
+// Preserved here so we have some idea which version of upstream we've pulled in
+// #define PSTL_VERSION 104
+// #define PSTL_VERSION_MAJOR (PSTL_VERSION/100)
+// #define PSTL_VERSION_MINOR (PSTL_VERSION - PSTL_VERSION_MAJOR * 100)
+
+// For now this defaults to being based on the presence of Thread Building Blocks
+# ifndef _GLIBCXX_USE_TBB_PAR_BACKEND
+# define _GLIBCXX_USE_TBB_PAR_BACKEND __has_include()
+# endif
+// This section will need some rework when a new (default) backend type is added
+# if _GLIBCXX_USE_TBB_PAR_BACKEND
+# define __PSTL_USE_PAR_POLICIES 1
+# endif
+
+# define __PSTL_ASSERT(_Condition) __glibcxx_assert(_Condition)
+# define __PSTL_ASSERT_MSG(_Condition, _Message) __glibcxx_assert(_Condition)
+
+#include
+
+#endif
+// End of prewritten config; the settings discovered at configure time follow.
+/* config.h. Generated from config.h.in by configure. */
+/* config.h.in. Generated from configure.ac by autoheader. */
+
+/* Define to 1 if you have the `acosf' function. */
+#define _GLIBCXX_HAVE_ACOSF 1
+
+/* Define to 1 if you have the `acosl' function. */
+#define _GLIBCXX_HAVE_ACOSL 1
+
+/* Define to 1 if you have the `aligned_alloc' function. */
+#define _GLIBCXX_HAVE_ALIGNED_ALLOC 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_ARPA_INET_H 1
+
+/* Define to 1 if you have the `asinf' function. */
+#define _GLIBCXX_HAVE_ASINF 1
+
+/* Define to 1 if you have the `asinl' function. */
+#define _GLIBCXX_HAVE_ASINL 1
+
+/* Define to 1 if the target assembler supports .symver directive. */
+#define _GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE 1
+
+/* Define to 1 if you have the `atan2f' function. */
+#define _GLIBCXX_HAVE_ATAN2F 1
+
+/* Define to 1 if you have the `atan2l' function. */
+#define _GLIBCXX_HAVE_ATAN2L 1
+
+/* Define to 1 if you have the `atanf' function. */
+#define _GLIBCXX_HAVE_ATANF 1
+
+/* Define to 1 if you have the `atanl' function. */
+#define _GLIBCXX_HAVE_ATANL 1
+
+/* Defined if shared_ptr reference counting should use atomic operations. */
+#define _GLIBCXX_HAVE_ATOMIC_LOCK_POLICY 1
+
+/* Define to 1 if you have the `at_quick_exit' function. */
+#define _GLIBCXX_HAVE_AT_QUICK_EXIT 1
+
+/* Define to 1 if the target assembler supports thread-local storage. */
+/* #undef _GLIBCXX_HAVE_CC_TLS */
+
+/* Define to 1 if you have the `ceilf' function. */
+#define _GLIBCXX_HAVE_CEILF 1
+
+/* Define to 1 if you have the `ceill' function. */
+#define _GLIBCXX_HAVE_CEILL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_COMPLEX_H 1
+
+/* Define to 1 if you have the `cosf' function. */
+#define _GLIBCXX_HAVE_COSF 1
+
+/* Define to 1 if you have the `coshf' function. */
+#define _GLIBCXX_HAVE_COSHF 1
+
+/* Define to 1 if you have the `coshl' function. */
+#define _GLIBCXX_HAVE_COSHL 1
+
+/* Define to 1 if you have the `cosl' function. */
+#define _GLIBCXX_HAVE_COSL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_DIRENT_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_DLFCN_H 1
+
+/* Define if EBADMSG exists. */
+#define _GLIBCXX_HAVE_EBADMSG 1
+
+/* Define if ECANCELED exists. */
+#define _GLIBCXX_HAVE_ECANCELED 1
+
+/* Define if ECHILD exists. */
+#define _GLIBCXX_HAVE_ECHILD 1
+
+/* Define if EIDRM exists. */
+#define _GLIBCXX_HAVE_EIDRM 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_ENDIAN_H 1
+
+/* Define if ENODATA exists. */
+#define _GLIBCXX_HAVE_ENODATA 1
+
+/* Define if ENOLINK exists. */
+#define _GLIBCXX_HAVE_ENOLINK 1
+
+/* Define if ENOSPC exists. */
+#define _GLIBCXX_HAVE_ENOSPC 1
+
+/* Define if ENOSR exists. */
+#define _GLIBCXX_HAVE_ENOSR 1
+
+/* Define if ENOSTR exists. */
+#define _GLIBCXX_HAVE_ENOSTR 1
+
+/* Define if ENOTRECOVERABLE exists. */
+#define _GLIBCXX_HAVE_ENOTRECOVERABLE 1
+
+/* Define if ENOTSUP exists. */
+#define _GLIBCXX_HAVE_ENOTSUP 1
+
+/* Define if EOVERFLOW exists. */
+#define _GLIBCXX_HAVE_EOVERFLOW 1
+
+/* Define if EOWNERDEAD exists. */
+#define _GLIBCXX_HAVE_EOWNERDEAD 1
+
+/* Define if EPERM exists. */
+#define _GLIBCXX_HAVE_EPERM 1
+
+/* Define if EPROTO exists. */
+#define _GLIBCXX_HAVE_EPROTO 1
+
+/* Define if ETIME exists. */
+#define _GLIBCXX_HAVE_ETIME 1
+
+/* Define if ETIMEDOUT exists. */
+#define _GLIBCXX_HAVE_ETIMEDOUT 1
+
+/* Define if ETXTBSY exists. */
+#define _GLIBCXX_HAVE_ETXTBSY 1
+
+/* Define if EWOULDBLOCK exists. */
+#define _GLIBCXX_HAVE_EWOULDBLOCK 1
+
+/* Define to 1 if GCC 4.6 supported std::exception_ptr for the target */
+#define _GLIBCXX_HAVE_EXCEPTION_PTR_SINCE_GCC46 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_EXECINFO_H 1
+
+/* Define to 1 if you have the `expf' function. */
+#define _GLIBCXX_HAVE_EXPF 1
+
+/* Define to 1 if you have the `expl' function. */
+#define _GLIBCXX_HAVE_EXPL 1
+
+/* Define to 1 if you have the `fabsf' function. */
+#define _GLIBCXX_HAVE_FABSF 1
+
+/* Define to 1 if you have the `fabsl' function. */
+#define _GLIBCXX_HAVE_FABSL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_FCNTL_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_FENV_H 1
+
+/* Define to 1 if you have the `finite' function. */
+#define _GLIBCXX_HAVE_FINITE 1
+
+/* Define to 1 if you have the `finitef' function. */
+#define _GLIBCXX_HAVE_FINITEF 1
+
+/* Define to 1 if you have the `finitel' function. */
+#define _GLIBCXX_HAVE_FINITEL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_FLOAT_H 1
+
+/* Define to 1 if you have the `floorf' function. */
+#define _GLIBCXX_HAVE_FLOORF 1
+
+/* Define to 1 if you have the `floorl' function. */
+#define _GLIBCXX_HAVE_FLOORL 1
+
+/* Define to 1 if you have the `fmodf' function. */
+#define _GLIBCXX_HAVE_FMODF 1
+
+/* Define to 1 if you have the `fmodl' function. */
+#define _GLIBCXX_HAVE_FMODL 1
+
+/* Define to 1 if you have the `fpclass' function. */
+/* #undef _GLIBCXX_HAVE_FPCLASS */
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_FP_H */
+
+/* Define to 1 if you have the `frexpf' function. */
+#define _GLIBCXX_HAVE_FREXPF 1
+
+/* Define to 1 if you have the `frexpl' function. */
+#define _GLIBCXX_HAVE_FREXPL 1
+
+/* Define if _Unwind_GetIPInfo is available. */
+#define _GLIBCXX_HAVE_GETIPINFO 1
+
+/* Define if gets is available in before C++14. */
+#define _GLIBCXX_HAVE_GETS 1
+
+/* Define to 1 if you have the `hypot' function. */
+#define _GLIBCXX_HAVE_HYPOT 1
+
+/* Define to 1 if you have the `hypotf' function. */
+#define _GLIBCXX_HAVE_HYPOTF 1
+
+/* Define to 1 if you have the `hypotl' function. */
+#define _GLIBCXX_HAVE_HYPOTL 1
+
+/* Define if you have the iconv() function. */
+#define _GLIBCXX_HAVE_ICONV 1
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_IEEEFP_H */
+
+/* Define if int64_t is available in . */
+#define _GLIBCXX_HAVE_INT64_T 1
+
+/* Define if int64_t is a long. */
+#define _GLIBCXX_HAVE_INT64_T_LONG 1
+
+/* Define if int64_t is a long long. */
+/* #undef _GLIBCXX_HAVE_INT64_T_LONG_LONG */
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_INTTYPES_H 1
+
+/* Define to 1 if you have the `isinf' function. */
+/* #undef _GLIBCXX_HAVE_ISINF */
+
+/* Define to 1 if you have the `isinff' function. */
+#define _GLIBCXX_HAVE_ISINFF 1
+
+/* Define to 1 if you have the `isinfl' function. */
+#define _GLIBCXX_HAVE_ISINFL 1
+
+/* Define to 1 if you have the `isnan' function. */
+/* #undef _GLIBCXX_HAVE_ISNAN */
+
+/* Define to 1 if you have the `isnanf' function. */
+#define _GLIBCXX_HAVE_ISNANF 1
+
+/* Define to 1 if you have the `isnanl' function. */
+#define _GLIBCXX_HAVE_ISNANL 1
+
+/* Defined if iswblank exists. */
+#define _GLIBCXX_HAVE_ISWBLANK 1
+
+/* Define if LC_MESSAGES is available in . */
+#define _GLIBCXX_HAVE_LC_MESSAGES 1
+
+/* Define to 1 if you have the `ldexpf' function. */
+#define _GLIBCXX_HAVE_LDEXPF 1
+
+/* Define to 1 if you have the `ldexpl' function. */
+#define _GLIBCXX_HAVE_LDEXPL 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_LIBINTL_H 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_AS 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_DATA 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_FSIZE 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_RSS 1
+
+/* Only used in build directory testsuite_hooks.h. */
+#define _GLIBCXX_HAVE_LIMIT_VMEM 0
+
+/* Define if link is available in . */
+#define _GLIBCXX_HAVE_LINK 1
+
+/* Define if futex syscall is available. */
+#define _GLIBCXX_HAVE_LINUX_FUTEX 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_LINUX_RANDOM_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_LINUX_TYPES_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_LOCALE_H 1
+
+/* Define to 1 if you have the `log10f' function. */
+#define _GLIBCXX_HAVE_LOG10F 1
+
+/* Define to 1 if you have the `log10l' function. */
+#define _GLIBCXX_HAVE_LOG10L 1
+
+/* Define to 1 if you have the `logf' function. */
+#define _GLIBCXX_HAVE_LOGF 1
+
+/* Define to 1 if you have the `logl' function. */
+#define _GLIBCXX_HAVE_LOGL 1
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_MACHINE_ENDIAN_H */
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_MACHINE_PARAM_H */
+
+/* Define if mbstate_t exists in wchar.h. */
+#define _GLIBCXX_HAVE_MBSTATE_T 1
+
+/* Define to 1 if you have the `memalign' function. */
+#define _GLIBCXX_HAVE_MEMALIGN 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_MEMORY_H 1
+
+/* Define to 1 if you have the `modf' function. */
+#define _GLIBCXX_HAVE_MODF 1
+
+/* Define to 1 if you have the `modff' function. */
+#define _GLIBCXX_HAVE_MODFF 1
+
+/* Define to 1 if you have the `modfl' function. */
+#define _GLIBCXX_HAVE_MODFL 1
+
+/* Define to 1 if you have the header file. */
+/* #undef _GLIBCXX_HAVE_NAN_H */
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_NETDB_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_NETINET_IN_H 1
+
+/* Define to 1 if you have the header file. */
+#define _GLIBCXX_HAVE_NETINET_TCP_H 1
+
+/* Define if defines obsolete isinf function. */
+/* #undef _GLIBCXX_HAVE_OBSOLETE_ISINF */
+
+/* Define if defines obsolete isnan function. */
+/* #undef _GLIBCXX_HAVE_OBSOLETE_ISNAN */
+
+/* Define if poll is available in . */
+#define _GLIBCXX_HAVE_POLL 1
+
+/* Define to 1 if you have the