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Shikamaru has Queries SOLUTIONS
Given a tree with N hubs numbered 1 to N established at hub 1, where the ith hub has a worth Ai, answer Q inquiries of the folowing type. :
a b w: For all hubs in the straightforward way among an and b, print the total of estimations of hubs where worth is <=w.
Information:
First line will contain N and Q
Next N−1 lines contain u,v speaking to an edge between them.
Next line contains N whole numbers A1,A2,…,AN.
Every one of the accompanying Q lines contain an inquiry of type a b w.
Yield:
Answer each Query in another line.
Limitations
3≤N,Q≤105
0≤Ai,W≤5∗105
1≤u,v,a,b≤N
u!=v
Test Input:
5 3
1 2
2 3
1 4
4 5
1 2 3 4 5
1 3 2
3 5 3
4 5 1
Test Output:
3
6
0
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