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A problem on Tree
Hi , i need help in this question
Problem statement in short :
Given a tree,every node has a value written on it.
There will be several queries of two types:
1 — update value of any node of tree
2 — tell if the product of values of node on path from u to v is divisble by k
All constraints are of order 10^5.
Editorial is not properly explained.
Thanks
