#AT1564. F - path pass i
F - path pass i
F - path pass i
Score : $600$ points
Problem Statement
We have a tree with $N$ vertices numbered $1$ to $N$. The $i$-th edge in this tree connects Vertex $a_i$ and $b_i$. Additionally, each vertex is painted in a color, and the color of Vertex $i$ is $c_i$. Here, the color of each vertex is represented by an integer between $1$ and $N$ (inclusive). The same integer corresponds to the same color; different integers correspond to different colors.
For each $k=1, 2, ..., N$, solve the following problem:
- Find the number of simple paths that visit a vertex painted in the color $k$ one or more times.
Note: The simple paths from Vertex $u$ to $v$ and from $v$ to $u$ are not distinguished.
Constraints
- $1 \leq N \leq 2 \times 10^5$
- $1 \leq c_i \leq N$
- $1 \leq a_i,b_i \leq N$
- The given graph is a tree.
- All values in input are integers.
Input
Input is given from Standard Input in the following format:
Output
Print the answers for $k = 1, 2, ..., N$ in order, each in its own line.
3
1 2 1
1 2
2 3
5
4
0
Let $P_{i,j}$ denote the simple path connecting Vertex $i$ and $j$.
There are $5$ simple paths that visit a vertex painted in the color $1$ one or more times:
$P_{1,1}\,,\,$
$P_{1,2}\,,\,$
$P_{1,3}\,,\,$
$P_{2,3}\,,\,$
$P_{3,3}$
There are $4$ simple paths that visit a vertex painted in the color $2$ one or more times:
$P_{1,2}\,,\,$
$P_{1,3}\,,\,$
$P_{2,2}\,,\,$
$P_{2,3}$
There are no simple paths that visit a vertex painted in the color $3$ one or more times.
1
1
1
2
1 2
1 2
2
2
5
1 2 3 4 5
1 2
2 3
3 4
3 5
5
8
10
5
5
8
2 7 2 5 4 1 7 5
3 1
1 2
2 7
4 5
5 6
6 8
7 8
18
15
0
14
23
0
23
0
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