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Max edge queries!


Problem Description

Given a tree with N nodes numbered from 1 to N.

Each edge is bi-directional and has a certain weight assigned to it.

You are given Q queries, in each query you are given two integers u and v and you are required to find the maximum weighted edge in a simple path from u to v.

You have to return the weight of the edge for each queries.



Problem Constraints

2 <= N, Q <= 105

1 <= u, v <= N and u != v

1 <= weight of any edge <= 108



Input Format

First argument is a 2-D array A of size (N-1) x 3 where (A[i][0], A[i][1]) denotes an edge of the tree from node A[i][0] to node A[i][1] with weight A[i][2].

Second argument is a 2-D array B of size Q x 2 denoting the queries, B[i][0] denotes u and B[i][1] denotes v.



Output Format

Return an integer array of size Q denoting the answer for each queries.



Example Input

Input 1:

 A = [  [1, 2, 11]
        [1, 3, 1]
        [2, 4, 12]
        [2, 5, 100]
     ]
 B = [  [3, 5]
        [2, 3]
     ]


Example Output

Output 1:

 [100, 11]


Example Explanation

Explanation 1:

 Query 1: u  = 3 and v = 5 so edge (2 -> 5) is the maximum weighted in the path from u to v so we will return the
 edge weight as the answer for this query.
 Query 2: u = 2 and  v= 3 so edge (2 -> 1) is the maximum weighted in the path from u to v so we will return the
 edge weight as the answer for this query.


NOTE: You only need to implement the given function. Do not read input, instead use the arguments to the function. Do not print the output, instead return values as specified. Still have a question? Checkout Sample Codes for more details.
Start solving Max edge queries! on Interview Code Editor
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