Discussion @ 1471. Distance in the Tree @ Timus Online Judge

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Discussion of Problem 1471. Distance in the Tree

AC in 0.249 and 8668 KB (RMQ for lca)

Posted by sak3t 29 May 2017 15:39

used RMQ using segment tree to find lca in log(n)
total time complexity O(n+q*(lgn)) = O(q*lgn)

Re: AC in 0.249 and 8668 KB (RMQ for lca)

Posted by Mahilewets 15 Jun 2017 22:06

Almost the same numbers (0.268, 11500) for table for 2^i -th ancestor.