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Cs Round#54 E Late Edges
题意:给定一个无向图,你从结点1开始走,每经过一条边需要1的时间,每条边都有一个开放时间,只有当目前所用的时间大于等于开放时间时,这条边才可以被经过。每一单位时间你都必须经过一条边,问最快什么时候可以到达N 一开始觉得当一条边未开放时,最优的策略便是在当前结点和上次经过的结点间徘徊,知道结点开放,于 ...
分类:其他好文   时间:2017-10-30 16:02:04    阅读次数:136
AOJ GRL_1_B: Shortest Path - Single Source Shortest Path (Negative Edges) (Bellman-Frod算法求负圈和单源最短路径)
题目链接: http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=GRL_1_B Single Source Shortest Path (Negative Edges) Input An edge-weighted graph G (V, ...
分类:编程语言   时间:2017-10-25 00:51:33    阅读次数:328
lintcode178- Graph Valid Tree- medium
Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to check whether these edges mak ...
分类:其他好文   时间:2017-10-24 14:54:34    阅读次数:187
bridge
Time limit : 2sec / Memory limit : 256MB Score : 300 points Problem Statement You are given an undirected connected graph with N vertices and M edges ...
分类:其他好文   时间:2017-10-15 18:07:07    阅读次数:200
HDU 4635 Strongly connected (Tarjan+一点数学分析)
Strongly connected Font: Times New Roman | Verdana | Georgia Font Size: ← → Problem Description Give a simple directed graph with N nodes and M edges. ...
分类:其他好文   时间:2017-10-14 21:02:30    阅读次数:206
CODE FESTIVAL 2017 qual B C - 3 Steps
Score : 500 points Problem Statement Rng has a connected undirected graph with N vertices. Currently, there are M edges in the graph, and the i-th edg ...
分类:其他好文   时间:2017-10-09 09:48:37    阅读次数:244
CodeForces 11D(状压DP 求图中环的个数)
Given a simple graph, output the number of simple cycles in it. A simple cycle is a cycle with no repeated vertices or edges. Input The first line of ...
分类:其他好文   时间:2017-10-08 16:14:22    阅读次数:258
数据结构 计算关键路径
如果在有向无环图中用有向边表示一个工程中的各项活动(Activity),用有向边上的权值表示活动的持续时间(duration),用顶点表示事件(Event),则这种有向图叫做用边表示活动的网络(activity on edges),简称AOE网络。例如: 其中,Ei表示事件,ak表示活动。E0是源点 ...
分类:其他好文   时间:2017-10-04 14:08:08    阅读次数:299
AizuOJ ALDS1_7_A Rooted Trees(有根树的表达)
A graph G = (V, E) is a data structure where V is a finite set of vertices and E is a binary relation on V represented by a set of edges. Fig. 1 illus ...
分类:其他好文   时间:2017-09-10 13:27:58    阅读次数:143
SPOJ QTREE - Query on a tree
QTREE - Query on a tree #tree #tree You are given a tree (an acyclic undirected connected graph) with N nodes, and edges numbered 1, 2, 3...N-1. We wi ...
分类:其他好文   时间:2017-08-24 21:38:10    阅读次数:211
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