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图论(网络流,二分图最小点权覆盖):POJ 2125 Destroying The Graph
Destroying The Graph Description Alice and Bob play the following game. First, Alice draws some directed graph with N vertices and M arcs. After that ...
分类:其他好文   时间:2016-07-07 22:16:17    阅读次数:237
拓扑排序(Topological Order)UVa10305 Ordering Tasks
2016/5/19 17:39:07 拓扑排序,是对有向无环图(Directed Acylic Graph , DAG )进行的一种操作,这种操作是将DAG中的所有顶点排成一个线性序列,使得图中的任意一对顶点u,v满足如下条件: 若边(u,v)∈E(G),则在最终的线性序列中出现在v的前面 好了,说 ...
分类:编程语言   时间:2016-06-23 12:24:24    阅读次数:160
HDU 4635 Strongly connected (有向图的强连通分量)
Strongly connected Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Description Give a simple directed graph w ...
分类:其他好文   时间:2016-06-20 22:15:56    阅读次数:211
手册框架
3.2 Basic graph types基本的图类型 Graph – Undirected graphs with self loops(有自环的无向图) DiGraph - Directed graphs with self loops(有自环的有向图) MultiGraph - Undirec ...
分类:其他好文   时间:2016-06-19 21:15:21    阅读次数:148
关键路径 SDUTOJ 2498
SDUTOJ 2498 AOE网上的关键路径 题目描述 一个无环的有向图称为无环图(Directed Acyclic Graph),简称DAG图。 AOE(Activity On Edge)网:顾名思义,用边表示活动的网,当然它也是DAG。与AOV不同,活动都表示在了边上,如下图所示: 如上所示,共 ...
分类:其他好文   时间:2016-06-05 16:56:12    阅读次数:203
【POJ2699】The Maximum Number of Strong Kings
Description A tournament can be represented by a complete graph in which each vertex denotes a player and a directed edge is from vertex x to vertex y ...
分类:其他好文   时间:2016-06-05 11:00:42    阅读次数:192
UVA 11478 bf+差分约束系统+二分逼近
Halum You are given a directed graph G(V, E) with a set of vertices and edges. Each edge (i, j) that connects some vertex i to vertex j has an integer ...
分类:其他好文   时间:2016-05-24 20:43:20    阅读次数:207
【 UVALive - 5095】Transportation(费用流)
Description There are N cities, and M directed roads connecting them. Now you want to transport K units ofgoods from city 1 to city N. There are many ...
分类:其他好文   时间:2016-05-23 14:35:09    阅读次数:237
Strong Components
Definition: Vertices v and w are srongly connected if there is a directed path from v to w and a directed path from w to v. Algorithm: Phase 1, Comput ...
分类:其他好文   时间:2016-05-01 12:15:32    阅读次数:158
Queue 应用——拓扑排序
1. 拓扑排序 题目描述:对一个有向无环图(Directed Acyclic Graph, DAG)G进行拓扑排序,是将G中所有顶点排成线性序列,是的图中任意一堆顶点u和v,若边(u, v)在E(G)中,则u在线性序列中出现在v之前。 如: 分析: 1)首先我们要将图G存入一个邻接矩阵中,保存该图; ...
分类:编程语言   时间:2016-04-30 12:58:18    阅读次数:223
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