24 lines
403 B
Python
24 lines
403 B
Python
#!/usr/bin/env python3
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from collections import Counter
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from functools import reduce
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# 1
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with open("day01") as f:
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lines = f.readlines()
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els = [l.split() for l in lines]
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l1 = [int(el[0]) for el in els]
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l2 = [int(el[1]) for el in els]
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l1.sort()
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l2.sort()
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d = [abs(e[0] - e[1]) for e in zip(l1, l2)]
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res = sum(d)
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# 2
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ctn = Counter(l2)
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res = reduce(lambda accum, e: accum + e*ctn.get(e, 0), l1, 0)
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