AtCoder Beginner Contest 187
翻译中…
Problem Statement
翻译中…
We have a tree with $N$ vertices and $N-1$ edges, where the vertices are numbered $1, 2, \dots, N$ and the edges are numbered $1, 2, \dots, N-1$. Edge $i$ connects Vertices $a_i$ and $b_i$.
Each vertex in the tree has an integer written on it. Let $c_i$ be the integer written on Vertex $i$. Initially, $c_i = 0$.
翻译中…
You will be given $Q$ queries. The $i$-th query, consisting of integers $t_i$, $e_i$, and $x_i$, is as follows:
翻译中…
- If
$t_i = 1$: for each Vertex$v$reachable from Vertex$a_{e_i}$without visiting Vertex$b_{e_i}$by traversing edges, replace$c_v$with$c_v + x_i$. - If
$t_i = 2$: for each Vertex$v$reachable from Vertex$b_{e_i}$without visiting Vertex$a_{e_i}$by traversing edges, replace$c_v$with$c_v + x_i$.
翻译中…
After processing all queries, print the integer written on each vertex.
翻译中…
Constraints
翻译中…
- All values in input are integers.
$2 \le N \le 2 \times 10^5$$1 \le a_i, b_i \le N$- The given graph is a tree.
$1 \le Q \le 2 \times 10^5$$t_i \in \{1, 2\}$$1 \le e_i \le N-1$$1 \le x_i \le 10^9$
翻译中…
Input
翻译中…
Input is given from Standard Input in the following format:
翻译中…
N
a_1 b_1
\vdots
a_{N-1} b_{N-1}
Q
t_1 e_1 x_1
\vdots
t_Q e_Q x_Q
翻译中…
Output
翻译中…
Print the values $c_1, c_2, \dots, c_N$ after processing all queries, each in its own line.
翻译中…
样例
Input #1
5
1 2
2 3
2 4
4 5
4
1 1 1
1 4 10
2 1 100
2 2 1000
Output #1
11
110
1110
110
100
In the first query, we add $1$ to each vertex reachable from Vertex $1$ without visiting Vertex $2$, that is, Vertex $1$.
In the second query, we add $10$ to each vertex reachable from Vertex $4$ without visiting Vertex $5$, that is, Vertex $1, 2, 3, 4$.
In the third query, we add $100$ to each vertex reachable from Vertex $2$ without visiting Vertex $1$, that is, Vertex $2, 3, 4, 5$.
In the fourth query, we add $1000$ to each vertex reachable from Vertex $3$ without visiting Vertex $2$, that is, Vertex $3$.
Input #2
7
2 1
2 3
4 2
4 5
6 1
3 7
7
2 2 1
1 3 2
2 2 4
1 6 8
1 3 16
2 4 32
2 1 64
Output #2
72
8
13
26
58
72
5
Input #3
11
2 1
1 3
3 4
5 2
1 6
1 7
5 8
3 9
3 10
11 4
10
2 6 688
1 10 856
1 8 680
1 8 182
2 2 452
2 4 183
2 6 518
1 3 612
2 6 339
2 3 206
Output #3
1657
1657
2109
1703
1474
1657
3202
1474
1247
2109
2559
题目信息
题面与样例版权归 AtCoder 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。