poj1274 题意: 有n个奶牛, m个畜舍, 每个畜舍最多装1头牛,每只奶牛只有在自己喜欢的畜舍里才能产奶. 求最大产奶量. 分析: 其实题意很明显, 二分图的最大匹配, 匈牙利算法. #include<iostream> #include<cstdio> #include<string.h> #include<cstring> using namespace std; ], ans[], map1[][]; int dfs(int x)//如果有增广路…

The Perfect Stall Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 22809   Accepted: 10161 Description Farmer John completed his new barn just last week, complete with all the latest milking technology. Unfortunately, due to engineering p…

The Perfect Stall Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 17895   Accepted: 8143 Description Farmer John completed his new barn just last week, complete with all the latest milking technology. Unfortunately, due to engineering pr…

N头牛,M个畜栏,每头牛仅仅喜欢当中的某几个畜栏,可是一个畜栏仅仅能有一仅仅牛拥有,问最多能够有多少仅仅牛拥有畜栏. 典型的指派型问题,用二分图匹配来做,求最大二分图匹配能够用最大流算法,也能够用匈牙利算法,这里使用匈牙利算法. #include <stdlib.h> #include <stdio.h> #include <vector> #include <math.h> #include <string.h> #include <st…

Machine Schedule Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 12976   Accepted: 5529 Description As we all know, machine scheduling is a very classical problem in computer science and has been studied for a very long history. Scheduli…

//匈牙利算法-DFS //求最小点覆盖集 == 求最大匹配 //Time:0Ms Memory:208K #include<iostream> #include<cstring> #include<cstdio> #include<algorithm> using namespace std; #define MAX 105 #define INF 0x3f3f3f3f int n,m,k; int gp[MAX][MAX]; bool sx[MAX],s…

匈牙利算法是由匈牙利数学家Edmonds于1965年提出,因而得名.匈牙利算法是基于Hall定理中充分性证明的思想,它是部图匹配最常见的算法,该算法的核心就是寻找增广路径,它是一种用增广路径求二分图最大匹配的算法. -------等等,看得头大?那么请看下面的版本: 通过数代人的努力,你终于赶上了剩男剩女的大潮,假设你是一位光荣的新世纪媒人,在你的手上有N个剩男,M个剩女,每个人都可能对多名异性有好感(-_-||暂时不考虑特殊的性取向),如果一对男女互有好感,那么你就可以把这一对撮合在一起,现在…

匈牙利算法 var i,j,k,l,n,m,v,mm,ans:longint; a:..,..]of longint; p,f:..]of longint; function xyl(x,y:longint):boolean; var i,j,k,l:longint; begin if f[x]=y then exit(false); f[x]:=y; to m do ))or(xyl(p[i],y)))then begin p[i]:=x; exit(true); end; exit(fals…

Strategic Game Bob enjoys playing computer games, especially strategic games, but sometimes he cannot find the solution fast enough and then he is very sad. Now he has the following problem. He must defend a medieval city, the roads of which form a t…

匈牙利 算法 一. 算法简介 匈牙利算法是由匈牙利数学家Edmonds于1965年提出.该算法的核心就是寻找增广路径,它是一种用增广路径求二分图最大匹配的算法. 二分图的定义: 设G=(V,E)是一个无向图,顶点集V可分割为两个互不相交的子集V1,V2,那么称此图G为二分图. 例如,下图就是一个二分图: 二分图的匹配: 二分图中的子图中,每个节点只连一条边,则称该子图是二分图中的一个匹配. 极大匹配: 无法再向二分图中加入边,使得满足匹配条件. 最大匹配: 所有极大匹配中边数最多的一个匹配. 完…