二分匹配的模板题,这里用网络流模板(见刘汝佳<算法竞赛入门经典·训练指南>P359 Dinic算法)做. 将男女生均看做网络上的节点,题中给出的每个"关系"看做一条起点为u节点,终点为v结点,容量为1的弧(因为每对"关系"只有匹配成功与失败两种情况,用1为容量即可表示).再取超级源汇s,t,由s向每个男生结点引容量为1的弧,每个女生结点向t引容量为1的弧(每个男生或是女生最多只能匹配成功一次,容量这样设置的话,一个结点与一个异性结点匹配成功后,它与所点的…

如果不懂匈牙利算法,请点击:该趣味算法http://blog.csdn.net/dark_scope/article/details/8880547 模板: //DFS版本下的二分匹配算法 http://paste.ubuntu.net/16122581/ #include<cstdio> #include<iostream> #include<vector> #include<set> #include<map> #include<mat…

Consider a group of N students and P courses. Each student visits zero, one or more than one courses. Your task is to determine whether it is possible to form a committee of exactly P students that satisfies simultaneously the conditions: . every stu…

Vertex Cover frog has a graph with nn vertices v(1),v(2),…,v(n)v(1),v(2),…,v(n) and mm edges (v(a1),v(b1)),(v(a2),v(b2)),…,(v(am),v(bm))(v(a1),v(b1)),(v(a2),v(b2)),…,(v(am),v(bm)). She would like to color some vertices so that each edge has at least…

//A组n人 B组m人 //最多有多少人匹配 每人仅仅有匹配一次 # include<stdio.h> # include<string.h> # include<algorithm> using namespace std; int n,m,k; int pp[1100][1100],map[1100],vis[1100]; int bfs(int x)//二分匹配模板 { for(int i=1;i<=m;i++)//B组中的人来迎合匹配 { if(!vis[…

题目:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=2361 来源:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=26760#problem/B Beloved Sons Time Limit: 2 Seconds      Memory Limit: 65536 KB      Special Judge Once upon a time there liv…

        ID Origin Title   34 / 81 Problem A POJ 3436 ACM Computer Factory   92 / 195 Problem B POJ 3281 Dining   55 / 148 Problem C POJ 1087 A Plug for UNIX   59 / 111 Problem D POJ 2195 Going Home   44 / 132 Problem E POJ 2516 Minimum Cost   35 / 72…

B. BerSU Ball time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The Berland State University is hosting a ballroom dance in celebration of its 100500-th anniversary! n boys and m girls are al…

Marriage is Stable Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 64 Accepted Submission(s): 43   Problem Description Albert, Brad, Chuck are happy bachelors who are in love with Laura, Marcy, Na…

Uncle Tom's Inherited Land* Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 203 Accepted Submission(s): 132   Problem Description Your old uncle Tom inherited a piece of land from his great-great-…