Score : $600$ points
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:
Note: The simple paths from Vertex $u$ to $v$ and from $v$ to $u$ are not distinguished.
Input is given from Standard Input in the following format:
$N$ $c_1$ $c_2$ $...$ $c_N$ $a_1$ $b_1$ $:$ $a_{N-1}$ $b_{N-1}$
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