13 lines
231 B
Python
13 lines
231 B
Python
from collections import defaultdict
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lines = sorted(int(x.strip()) for x in open("input.txt"))
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cnt = defaultdict(int)
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last = 0
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for line in lines:
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mov = line - last
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last = line
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cnt[mov] += 1
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print(cnt[1] * (cnt[3]+1))
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