10 lines
409 B
Python
10 lines
409 B
Python
from functools import reduce
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from math import gcd
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lcm = lambda a, b: abs(a*b) // gcd(a, b)
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def merge(a, b, x, y):
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while b != y:
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if b < y: b += a * ((y-b-1) // a + 1)
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else: y += x * ((b-y-1) // x + 1)
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return lcm(a, x), b
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print(reduce(lambda fn, fm: merge(*fn, *fm), ((int(x), -idx) for idx, x in enumerate([x.strip() for x in open("input.txt")][1].split(',')) if x != 'x'), (1, 0))[1])
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