#P7497. [2017年杭电多校]Influence
[2017年杭电多校]Influence
Influence
Problem Description
You are given a rooted tree with N vertices, numbered from 1 to n, the root is 1. The weight of edges is 1, the value of vertices is 0 at the beginning. There are 3 type of operation: 1 x : query the value of vertex x 2 x y : modify the weight of edge to y whose child node is x 3 x y : for every vertex i in the tree, value of it add (), means the shortest distance between x and i in tree
Input
The first line of the input gives the number of test cases T; T test cases follow. Each case begins with one line with one integer N : the size of the tree. The next one line contains N-1 integers, ith number Pi denotes there is an edge between i+1 and Pi. The next line contains one integer M : times of operation. The next M line, each line contains one operation mentioned above. Limits , for operation 1 : operation 2 : , operation 3 : ,
Output
For each operation 1 output one integer denotes the answer.
Sample Input
2
3
1 1
7
3 1 1
1 2
1 3
2 2 2
3 1 2
1 2
1 3
10
1 1 3 4 4 3 1 1 9
7
2 9 74
3 7 96
1 6
3 7 87
2 5 69
3 10 6
1 5
Sample Output
1
1
5
3
288
1425
Source
2017 Multi-University Training Contest - Team 6