poj tarjan算法的相关内容

文章 2022-02-16 来自：开发者社区

【POJ 1236 Network of Schools】强联通分量问题 Tarjan算法，缩点

题目链接：http://poj.org/problem?id=1236 题意：给定一个表示n所学校网络连通关系的有向图。现要通过网络分发软件，规则是：若顶点u,v存在通路，发给u，则v可以通过网络从u接收到。现要求解两个问题： TaskA: 最少分发给几个学校，就可以使所有的学校都能得到软件。 TaskB: 最少增加几条边，就可以使得，发软件给任一学校，所有学校都可以收到。思路：先进行强联通....

文章 2022-02-16 来自：开发者社区

【POJ 1330 Nearest Common Ancestors】LCA问题 Tarjan算法

题目链接：http://poj.org/problem?id=1330 题意：给定一个n个节点的有根树，以及树中的两个节点u,v，求u,v的最近公共祖先。数据范围：n [2, 10000] 思路：从树根出发进行后序深度优先遍历，设置vis数组实时记录是否已被访问。每遍历完一棵子树r，把它并入以r的父节点p为代表元的集合。这时判断p是不是所要求的u, v节点之一，如果r==u，且v已访问过，则....

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