题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4587 思路:题目的意思很简单,就是删除任意2个节点以及关联的边,求图的最大连通分量数.我们知道删除割点连通分量会增加,因此我们可以枚举其中一个点,然后另一个点选择割点,统计每次的最大值即可. http://paste.ubuntu.com/5998026/…

Fantasia Time Limit: 10000/5000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1654    Accepted Submission(s): 429 Problem Description Professor Zhang has an undirected graph G with n vertices and m edges. Each vert…

题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=4587 题意: 删除两个点,使连通块的数目最大化 题解: 枚举删除第一个点,然后对删除了第一个点的图跑割点更新答案. 代码: #include<algorithm> #include<iostream> #include<cstring> #include<vector> #include<cstdio> using namespace std; ;…

原题链接:http://acm.hdu.edu.cn/showproblem.php?pid=4587 TWO NODES Time Limit: 24000/12000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 1448    Accepted Submission(s): 441 Problem Description Suppose that G is an undir…

做了非常久...... 题目链接:  http://acm.hdu.edu.cn/showproblem.php?pid=4587 先枚举删除的第一个点,第二个点就是找割点.没有割点当然也有答案 学到的: 1.图论硬套模板不太现实,比方这道题,我能想到孤立点是特殊情况,删除孤立点.连通分支个数会降低一,可是一直处理不好,最后按缩点的做法搞了. 推断是不是孤立点的方法: 就是先用一个数组scnt[i]=j,vv[j]++  表示点i在以j为祖先的联通分支里,并且每次都让vv[j]++,就使得vv[…

题意:求一个无向图的,去掉两个不同的点后最多有几个连通分量. 思路:枚举每个点,假设去掉该点,然后对图求割点后连通分量数,更新最大的即可.算法相对简单,但是注意几个细节: 1:原图可能不连通. 2:有的连通分量只有一个点,当舍去该点时候,连通分量-1: 复习求割点的好题! #include<iostream> #include<cstdio> #include<vector> using namespace std; int n,m; vector<vector&…

Suppose that G is an undirected graph, and the value of stab is defined as follows: Among the expression,G -i, -j is the remainder after removing node i, node j and all edges that are directly relevant to the previous two nodes. cntCompent is the num…

Description Suppose that G is an undirected graph, and the value of stab is defined as follows: Among the expression,G -i, -j is the remainder after removing node i, node j and all edges that are directly relevant to the previous two nodes. cntCompen…

http://acm.hdu.edu.cn/showproblem.php?pid=4587 题意: 给一图,求割去两个点后所能形成的最大连通分支数. 思路: 对于这种情况,第一个只能枚举,然后在删除第一个点的前提下,用Tarjan算法求第二个割点的情况. #include<iostream> #include<algorithm> #include<cstring> #include<cstdio> #include<sstream> #inc…

B - TWO NODESTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=87326#problem/B Description Suppose that G is an undirected graph, and the value of stab is defined as follows: Among the expression,G -i,…