Dining Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 18230   Accepted: 8132 Description Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. Farmer John has cooked fabulo…

Dining Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 11828   Accepted: 5437 Description Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. Farmer John has cooked fabulo…

POJ 3281 Dining (网络流) Description Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. Farmer John has cooked fabulous meals for his cows, but he forgot to check his menu against their…

POJ 3281 Dining id=3281" target="_blank" style="">题目链接 题意:n个牛.每一个牛有一些喜欢的食物和饮料.每种食物饮料仅仅有一个.问最大能匹配上多少仅仅牛每一个牛都能吃上喜欢的食物和喜欢的饮料 思路:最大流.建模源点到每一个食物连一条边,容量为1,每一个饮料向汇点连一条边容量为1,然后因为每一个牛有容量1.所以把牛进行拆点.然后食物连向牛的入点,牛的出点连向食物,跑一下最大流就可以 代码: #incl…

题意很简单:JOHN是一个农场主养了一些奶牛,神奇的是这些个奶牛有不同的品味,只喜欢吃某些食物,喝某些饮料,傻傻的John做了很多食物和饮料,但她不知道可以最多喂饱多少牛,(喂饱当然是有吃有喝才会饱) 输入数据有N,F,D,表示牛的个数,食物的数量,饮料的数量 接着输出N行表示N个牛的数据 每个牛的数据前2个是Fi和Di表示第i个牛喜欢吃的食物种数和饮料种数,接着输出Fi个食物的编号和Di个食物的编号 ok题意就是这样,这题主要考的是建图 需要把牛拆点,一分为二 图应该是 这种形式      源…

Dining Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 20052   Accepted: 8915 Description Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. Farmer John has cooked fabulo…

[题目链接] http://poj.org/problem?id=3281 [题目大意] 给出一些食物,一些饮料,每头牛只喜欢一些种类的食物和饮料, 但是每头牛最多只能得到一种饮料和食物,问可以最多满足几头牛的要求 即同时得到喜欢的饮料和食物 [题解] 建立一个源点连接食物,汇点连接饮料,中间连接牛, 为了防止同一头牛占用多个资源,所以我们对牛进行拆点,限流为1. [代码(Isap)] #include <cstdio> #include <cstring> using names…

Description Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. Farmer John has cooked fabulous meals for his cows, but he forgot to check his menu against their preferences. Although…

watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvbmlrZTBnb29k/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast" style="font-family:宋体"> Language: Default Dining Time Limit: 2000MS   Memory Limit: 65536K Total Submis…

Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no others. Farmer John has cooked fabulous meals for his cows, but he forgot to check his menu against their preferences. Although he might not…