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23 lines
382 B
23 lines
382 B
4 years ago
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#!/usr/bin/env python3
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from sys import argv
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i = [int(x) for x in open(argv[1]).read().strip().split(",")]
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a = {x:t+1 for t,x in enumerate(i[:-1])}
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t = len(i)
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l = i[-1]
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def f(x):
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global l,t
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while t < x:
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if l in a:
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n = t - a[l]
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else:
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n = 0
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a[l] = t
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t += 1
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l = n
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return l
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print(f(2020))
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print(f(30000000))
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