atcoder#DPV. Subtree
Subtree
Score : points
Problem Statement
There is a tree with vertices, numbered . For each (), the -th edge connects Vertex and .
Taro has decided to paint each vertex in white or black, so that any black vertex can be reached from any other black vertex by passing through only black vertices.
You are given a positive integer . For each (), answer the following question:
- Assuming that Vertex has to be black, find the number of ways in which the vertices can be painted, modulo .
Constraints
- All values in input are integers.
- The given graph is a tree.
Input
Input is given from Standard Input in the following format:
Output
Print lines. The -th () line should contain the answer to the following question:
- Assuming that Vertex has to be black, find the number of ways in which the vertices can be painted, modulo .
3 100
1 2
2 3
3
4
3
There are seven ways to paint the vertices, as shown in the figure below. Among them, there are three ways such that Vertex is black, four ways such that Vertex is black and three ways such that Vertex is black.
4 100
1 2
1 3
1 4
8
5
5
5
1 100
1
10 2
8 5
10 8
6 5
1 5
4 8
2 10
3 6
9 2
1 7
0
0
1
1
1
0
1
0
1
1
Be sure to print the answers modulo .