codeforces#P258E. Little Elephant and Tree
Little Elephant and Tree
Description
The Little Elephant loves trees very much, he especially loves root trees.
He's got a tree consisting of n nodes (the nodes are numbered from 1 to n), with root at node number 1. Each node of the tree contains some list of numbers which initially is empty.
The Little Elephant wants to apply m operations. On the i-th operation (1 ≤ i ≤ m) he first adds number i to lists of all nodes of a subtree with the root in node number ai, and then he adds number i to lists of all nodes of the subtree with root in node bi.
After applying all operations the Little Elephant wants to count for each node i number ci — the number of integers j (1 ≤ j ≤ n; j ≠ i), such that the lists of the i-th and the j-th nodes contain at least one common number.
Help the Little Elephant, count numbers ci for him.
The first line contains two integers n and m (1 ≤ n, m ≤ 105) — the number of the tree nodes and the number of operations.
Each of the following n - 1 lines contains two space-separated integers, ui and vi (1 ≤ ui, vi ≤ n, ui ≠ vi), that mean that there is an edge between nodes number ui and vi.
Each of the following m lines contains two space-separated integers, ai and bi (1 ≤ ai, bi ≤ n, ai ≠ bi), that stand for the indexes of the nodes in the i-th operation.
It is guaranteed that the given graph is an undirected tree.
In a single line print n space-separated integers — c1, c2, ..., cn.
Input
The first line contains two integers n and m (1 ≤ n, m ≤ 105) — the number of the tree nodes and the number of operations.
Each of the following n - 1 lines contains two space-separated integers, ui and vi (1 ≤ ui, vi ≤ n, ui ≠ vi), that mean that there is an edge between nodes number ui and vi.
Each of the following m lines contains two space-separated integers, ai and bi (1 ≤ ai, bi ≤ n, ai ≠ bi), that stand for the indexes of the nodes in the i-th operation.
It is guaranteed that the given graph is an undirected tree.
Output
In a single line print n space-separated integers — c1, c2, ..., cn.
Samples
5 1
1 2
1 3
3 5
3 4
2 3
0 3 3 3 3
11 3
1 2
2 3
2 4
1 5
5 6
5 7
5 8
6 9
8 10
8 11
2 9
3 6
2 8
0 6 7 6 0 2 0 5 4 5 5