Codeforces Round 111 (Div. 2)
D
Edges in MST
Codeforces
2300
原题
← CE →
翻译中…

You are given a connected weighted undirected graph without any loops and multiple edges.

翻译中…

Let us remind you that a graph's spanning tree is defined as an acyclic connected subgraph of the given graph that includes all of the graph's vertexes. The weight of a tree is defined as the sum of weights of the edges that the given tree contains. The minimum spanning tree (MST) of a graph is defined as the graph's spanning tree having the minimum possible weight. For any connected graph obviously exists the minimum spanning tree, but in the general case, a graph's minimum spanning tree is not unique.

翻译中…

Your task is to determine the following for each edge of the given graph: whether it is either included in any MST, or included at least in one MST, or not included in any MST.

翻译中…

Input

翻译中…

The first line contains two integers $*n*$ and $*m*$ ($2 ≤ *n* ≤ 10^{5}$, image) — the number of the graph's vertexes and edges, correspondingly. Then follow $*m*$ lines, each of them contains three integers — the description of the graph's edges as "$*a*_{*i*}$ $*b*_{*i*}$ $*w*_{*i*}$" ($1 ≤ *a*_{*i*}, *b*_{*i*} ≤ *n*, 1 ≤ *w*_{*i*} ≤ 10^{6}, *a*_{*i*} ≠ *b*_{*i*}$), where $*a*_{*i*}$ and $*b*_{*i*}$ are the numbers of vertexes connected by the $*i*$-th edge, $*w*_{*i*}$ is the edge's weight. It is guaranteed that the graph is connected and doesn't contain loops or multiple edges.

翻译中…

Output

翻译中…

Print $*m*$ lines — the answers for all edges. If the $*i*$-th edge is included in any MST, print "any"; if the $*i*$-th edge is included at least in one MST, print "at least one"; if the $*i*$-th edge isn't included in any MST, print "none". Print the answers for the edges in the order in which the edges are specified in the input.

翻译中…

Note

翻译中…

In the second sample the MST is unique for the given graph: it contains two first edges.

翻译中…

In the third sample any two edges form the MST for the given graph. That means that each edge is included at least in one MST.

翻译中…

样例

Input #1
4 5
1 2 101
1 3 100
2 3 2
2 4 2
3 4 1
Output #1
none
any
at least one
at least one
any
InputCopy OutputCopy
Input #2
3 3
1 2 1
2 3 1
1 3 2
Output #2
any
any
none
InputCopy OutputCopy
Input #3
3 3
1 2 1
2 3 1
1 3 1
Output #3
at least one
at least one
at least one
InputCopy OutputCopy
题目信息
题号
160D
时间限制
2 s
内存限制
256 MB
标签
DFS 及类似
并查集
图论
排序

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。