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有向图的强连通分量 定义：在有向图$G$中，如果两个顶点$v_i,v_j$间$(v_i v_j)$有一条从$v_i$到$v_j$的有向路径，同时还有一条从$v_j$到$v_i$的有向路径，则称两个顶点强连通(strongly connected)。如果有向图$G$的每两个顶点都强连通，称$G$是一个 ...
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编程语言 时间：
2019-02-16 20:45:43
阅读次数：
192
题目描述 Given a connected undirected graph, tell if its minimum spanning tree is unique. Definition 1 (Spanning Tree): Consider a connected, undirected g ...
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其他好文 时间：
2019-02-16 00:06:05
阅读次数：
170
It is vitally important to have all the cities connected by highways in a war. If a city is occupied by the enemy, all the highways from/toward that c ...
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其他好文 时间：
2019-02-15 14:02:17
阅读次数：
143
题目: A graph which is connected and acyclic can be considered a tree. The hight of the tree depends on the selected root. Now you are supposed to find ...
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其他好文 时间：
2019-02-12 13:19:24
阅读次数：
222
You are given a tree (an undirected acyclic connected graph) with N nodes, and edges numbered 1, 2, 3...N-1. Each edge has an integer value assigned t ...
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其他好文 时间：
2019-02-07 21:56:19
阅读次数：
134
You are given a tree (an acyclic undirected connected graph) with N nodes, and edges numbered 1, 2, 3...N-1. We will ask you to perfrom some instructi ...
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其他好文 时间：
2019-02-07 10:47:56
阅读次数：
115
https://pintia.cn/problem-sets/994805342720868352/problems/994805482919673856 A graph which is connected and acyclic can be considered a tree. The hig ...
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其他好文 时间：
2019-02-06 09:34:51
阅读次数：
152
Given a non-empty 2D array grid of 0's and 1's, an island is a group of 1's (representing land) connected 4-directionally (horizontal or vertical.) Yo ...
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其他好文 时间：
2019-02-03 10:28:29
阅读次数：
185
Codeforces 1108F MST + LCA F. MST Unification Description: You are given an undirected weighted connected graph with $n$ vertices and $m$ edges withou ...
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其他好文 时间：
2019-02-03 00:52:45
阅读次数：
156
