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One liner (awful) solution in Creative category for How to Find Friends by CDG.Axel
def check_connection(network, first, second):
return second in __import__('functools').reduce(lambda friends, _: friends |
{y.pop() for x in network if len(y := (set(x.split('-'))-friends)) == 1}, network, {first})
Nov. 13, 2021
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