CodeTON Round 1 (Div. 1 + Div. 2, Rated, Prizes!)
E
Equal Tree Sums
Codeforces
2200
原题
← DF →
翻译中…

You are given an undirected unrooted tree, i.e. a connected undirected graph without cycles.

翻译中…

You must assign a nonzero integer weight to each vertex so that the following is satisfied: if any vertex of the tree is removed, then each of the remaining connected components has the same sum of weights in its vertices.

翻译中…

Input

翻译中…

The input consists of multiple test cases. The first line contains a single integer $t$ ($1 \leq t \leq 10^4$) — the number of test cases. Description of the test cases follows.

翻译中…

The first line of each test case contains an integer $n$ ($3 \leq n \leq 10^5$) — the number of vertices of the tree.

翻译中…

The next $n-1$ lines of each case contain each two integers $u, v$ ($1 \leq u,v \leq n$) denoting that there is an edge between vertices $u$ and $v$. It is guaranteed that the given edges form a tree.

翻译中…

The sum of $n$ for all test cases is at most $10^5$.

翻译中…

Output

翻译中…

For each test case, you must output one line with $n$ space separated integers $a_1, a_2, \ldots, a_n$, where $a_i$ is the weight assigned to vertex $i$. The weights must satisfy $-10^5 \leq a_i \leq 10^5$ and $a_i \neq 0$.

翻译中…

It can be shown that there always exists a solution satisfying these constraints. If there are multiple possible solutions, output any of them.

翻译中…

Note

翻译中…

In the first case, when removing vertex $1$ all remaining connected components have sum $5$ and when removing vertex $3$ all remaining connected components have sum $2$. When removing other vertices, there is only one remaining connected component so all remaining connected components have the same sum.

翻译中…

样例

Input #1
2
5
1 2
1 3
3 4
3 5
3
1 2
1 3
Output #1
-3 5 1 2 2
1 1 1
InputCopy OutputCopy
题目信息
题号
1656E
时间限制
1 s
内存限制
256 MB
标签
构造
DFS 及类似
数学
树

题面与样例版权归 Codeforces 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。