二分图的最大匹配.我是用最大流求解.加个源点s和汇点t:s和每只cow.每个stall和t 连一条容量为1有向边,每只cow和stall(that the cow is willing to produce milk in )也连一条容量为1的边.然后就用ISAP. #include<cstdio> #include<cstring> #include<iostream> #include<algorithm> #include<vector>…

这题关键就在将题转换成最大流模板题.首先有一个原始点,N个cow个点, M个barn点和一个终点,原始点到cow点和barn点到终点的流都为1,而cow对应的barn就是cow点到对应barn点的流,为1.这样题目就转换成了原始点到终点的最大流问题 /* ID: yingzho1 LANG: C++ TASK: stall4 */ #include <iostream> #include <fstream> #include <string> #include <…

The Perfect StallHal Burch Farmer John completed his new barn just last week, complete with all the latest milking technology. Unfortunately, due to engineering problems, all the stalls in the new barn are different. For the first week, Farmer John r…

The Perfect Stall题解 Hal Burch Farmer John completed his new barn just last week, complete with all the latest milking technology. Unfortunately, due to engineering problems, all the stalls in the new barn are different. For the first week, Farmer Joh…

The Perfect Stall Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 23911   Accepted: 10640 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: 16396   Accepted: 7502 Description Farmer John completed his new barn just last week, complete with all the latest milking technology. Unfortunately, due to engineering pr…

The Perfect Stall Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 25739   Accepted: 11444 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: 23911   Accepted: 10640 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: 17768   Accepted: 8104 Description Farmer John completed his new barn just last week, complete with all the latest milking technology. Unfortunately, due to engineering pr…

poj——1274   The Perfect Stall Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 25709   Accepted: 11429 Description Farmer John completed his new barn just last week, complete with all the latest milking technology. Unfortunately, due to e…