46 lines
725 B
Python
46 lines
725 B
Python
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#!/usr/bin/env python3
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import operator
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# 1
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m = list()
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with open("day02") as f:
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for l in f:
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m.append(list(map(int, l.split())))
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def cmp2(l, op):
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e1 = l[0]
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for e2 in l[1: ]:
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if op(e1, e2): e1 = e2
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else: return False
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return True
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def safe(x):
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if not cmp2(x, operator.lt) and not cmp2(x, operator.gt):
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return False
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if not cmp2(x, lambda e1, e2: abs(e1-e2) <= 3):
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return False
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return True
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res = 0
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for e in m:
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if safe(e): res+=1
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print(res)
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# 2
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def ssafe(x):
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if safe(x): return True
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for i in range(len(x)):
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nx = x[:i] + x[i+1:]
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if safe(nx): return True
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return False
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res = 0
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for l in m:
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if ssafe(l): res += 1
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print(res)
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