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Day 13 (reduce)

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Sebastian Seedorf
2020-12-13 18:20:32 +01:00
parent b22c9c9e48
commit e6dd5f4450
1 changed files with 3 additions and 6 deletions
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9
day13/part2.py
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@@ -1,3 +1,4 @@
from functools import reduce
from math import gcd from math import gcd
@@ -20,9 +21,5 @@ def merge(a, b, x, y):
lines = [x.strip() for x in open("input.txt")] lines = [x.strip() for x in open("input.txt")]
busses = ((int(x), -idx) for idx, x in enumerate(lines[1].split(',')) if x != 'x') busses = ((int(x), -idx) for idx, x in enumerate(lines[1].split(',')) if x != 'x')
sequence = reduce(lambda fn, fm: merge(*fn, *fm), busses, (1, 0))
current = (1, 0) print(sequence[1])
for bus in busses:
current = merge(*current, *bus)
print(current[1])