Discussion @ 1018. Binary Apple Tree @ Timus Online Judge

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Discussion of Problem 1018. Binary Apple Tree

When Q = N-1

Posted by Moonlight [LNU] 15 Jan 2011 14:49

When Q = N-1 you shouldn't remove any branch. I don't know why, but it works and my application was accepted. Otherwise you will get WA #1.

Re: When Q = N-1

Posted by Vlad 31 Mar 2011 17:23

A tree with N nodes has exactly N-1 edges.
So if you want to preserve Q=N-1 edges, then it's no mystery that you shouldn't remove any branches :)