Centroid Decomposition

Revision en1, by siva2697, 2018-02-26 17:03:24

Question: QTREE5

I have read a solution that uses Centroid Decomposition but was unable understand how the querying in Centroid Tree reflects the same in the original Tree?? Edges are changed.Path from u to v might not contain centroids why does that appraoch work?

Can someone help?

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en1 English siva2697 2018-02-26 17:03:24 354 Initial revision (published)