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dg rman
sqlplus / as sysdbaSQL*Plus: Release 11.2.0.1.0 Production on Fri Feb 6 21:05:43 2015Copyright (c) 1982, 2009, Oracle. All rights reserved.Connected t...
分类:其他好文   时间:2015-02-06 23:03:50    阅读次数:261
POJ 1737 Connected Graph 递推
题目大意:求n个点能组成多少种无向连通图 多年的老心病终于干掉了- - 令f[i]表示i个点能组成多少种无向图 首先易知我们能生成2^(i*(i-1)/2)种图 但是一些是不合法的 我们要将不合法的干掉 枚举1号节点与多少个点连通 设1号节点所在联通块大小为j(1 那么与1相连的其它点有C(i-1,j-1)中选法,1号节点所在联通块有f[j]种连法,不与1号节点相连的点有2^((i-j...
分类:其他好文   时间:2015-02-05 11:16:19    阅读次数:101
Kosaraju 算法查找强连通分支
有向图 G = (V, E) 的一个强连通分支(SCC:Strongly Connected Components)是一个最大的顶点集合 C,C 是 V 的子集,对于 C 中的每一对顶点 u 和 v,有 u --> v 和 v --> u,亦即,顶点 u 和 v 是互相可达的。通过 Kosaraju...
分类:编程语言   时间:2015-01-31 00:18:59    阅读次数:241
Kosaraju 算法检测有向图的强连通性
给定一个有向图 G = (V, E) ,对于任意一对顶点 u 和 v,有 u --> v 和 v --> u,亦即,顶点 u 和 v 是互相可达的,则说明该图 G 是强连通的(Strongly Connected)。如下图中,任意两个顶点都是互相可达的。实际上,解决该问题的较好的方式就是使用强连通分...
分类:编程语言   时间:2015-01-31 00:03:04    阅读次数:263
远程测试mysql数据库3306端口报错
错误现象:[root@localhost ~]# telnet 192.168.10.130 3306Trying 192.168.10.130...Connected to 192.168.10.130.Escape character is '^]'.GHost '192.168.10.120'...
分类:数据库   时间:2015-01-30 17:01:37    阅读次数:162
Battle Over Cities (25)(DFS、连通图)
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...
分类:其他好文   时间:2015-01-30 08:59:03    阅读次数:151
HDU 4612 Warm up(边双联通求树的直径)
Problem Description   N planets are connected by M bidirectional channels that allow instant transportation. It's always possible to travel between any two planets through these channels.   If we ...
分类:移动开发   时间:2015-01-29 21:11:36    阅读次数:248
PAT1003. Emergency (25)
As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered cities connected by some ro...
分类:其他好文   时间:2015-01-28 17:46:27    阅读次数:192
Deepest Root (并查集+DFS树的深度)
A graph which is connected and acyclic can be considered a tree. The height of the tree depends on the selected root. Now you are supposed to find the...
分类:其他好文   时间:2015-01-28 14:22:47    阅读次数:172
poj-1679 The Unique MST
http://poj.org/problem?id=1679 The Unique MST Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 21550   Accepted: 7619 Description Given a connected...
分类:其他好文   时间:2015-01-27 15:05:39    阅读次数:169
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