I am trying to solve https://www.spoj.com/problems/QTREE4/ using centroid decomposition, but I am not able to solve it.
It would be appreciated if someone could help me with the approach.
Thanks in advance!
I am trying to solve https://www.spoj.com/problems/QTREE4/ using centroid decomposition, but I am not able to solve it.
It would be appreciated if someone could help me with the approach.
Thanks in advance!
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