Description We are supposed to make a budget proposal for this multi-site competition. The budget proposal is a matrix where the rows represent different kinds of expenses and the columns represent different sites. We had a meeting about this, some t…
题意: cas //测试数据组数 n m //行数 列数 a1 a2 ... an //每行的和 b1 b2 ... bn //每列的和 q //操作数量 //接下来q行 a b >/</= c //若a为0则表示一整列,b为0表示一整行,否则a代表第几行,b代表第几列,操作表示选中区域或者某个元素要严格大于或者严格小于或者等于c 求:判断是否存在合法矩阵,如果存在输出任一合法矩阵(每个元素都要求非负),否则输出“IM…
题意:农夫为他的 N (1 ≤ N ≤ 100) 牛准备了 F (1 ≤ F ≤ 100)种食物和 D (1 ≤ D ≤ 100) 种饮料.每头牛都有各自喜欢的食物和饮料, 而每种食物或饮料只能分配给一头牛.最多能有多少头牛可以同时得到喜欢的食物和饮料? 析:是一个经典网络流的题,建立一个超级源点,连向每种食物,建立一个超级汇点,连向每种饮料,然后把每头牛拆成两个点, 一个和食物连,一个和饮料连,最后跑一遍最大流即可. 代码如下: #pragma comment(linker, "/STACK:…
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…
B - DiningTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=88038#problem/B Description Cows are such finicky eaters. Each cow has a preference for certain foods and drinks, and she will consume no oth…
Description Every time it rains on Farmer John's fields, a pond forms over Bessie's favorite clover patch. This means that the clover is covered by water for awhile and takes quite a long time to regrow. Thus, Farmer John has built a set of drainage…
Optimal Milking Time Limit: 2000MS Memory Limit: 30000K Total Submissions: 15749 Accepted: 5617 Case Time Limit: 1000MS Description FJ has moved his K (1 <= K <= 30) milking machines out into the cow pastures among the C (1 <= C <= 200) co…
Dining Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 14144 Accepted: 6425 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…
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…
