\(Link\) \(\text{Solution:}\) 这一题,我们要做到,食物和牛.牛和饮料均为一对一的关系.我们发现这个图不好建立. 经典技巧:将牛拆边,拆成入点和出点,并连容量为\(1\)的边. 然后,从源点向食物连边,从食物向牛的入点连边,入点向出点连边,出点向饮料连边,饮料向汇点连边.容量均为\(1.\) 建立完这个图模型后,直接跑最大流即可. 注意点的编号问题. #include<bits/stdc++.h> using namespace std; const int MAX…

前言 闲得没事把 bzoj5000+ 在 Luogu 上可找到的题面整理了一下-- 对于我,bzoj 连账号都没有,所以肯定是不清楚 bzoj 题目总数的--因此其实就是手动翻查. 工作量很大,基本不会再碰这玩意(再过几个月就退役了).有意重建 bzoj 者自取. 通过 vjudge 翻找 HYSBZ.mina 扩展应用 BZPRO 确定题目,也有一部分是翻大佬博客推断:部分题号对应题目存在争议,可能是因为题目更改后 vjudge 题面更新失败所致. 因此,对于题号 \(5500+\) 的题目,…

这一节主要介绍segues,static table view cells 和 Add Player screen 以及 a game picker screen. Introducing Segues 开启 Main.storyboard拖拉一个Bar Button Item到Players窗口导航栏的右侧.在Attributes inspector中改变Identifier为Add,就会出现一个+号button.…

​<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="position: absolute; width: 0; height: 0"> <symbol xmlns="http://www.w3.org/2000/svg" class="icon" viewBox…

Dining Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 14316   Accepted: 6491 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 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. Al…

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…

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…

题目链接 Description Usually children in kindergarten like to quarrel with each other. This situation annoys the child-care women. For instant, when diner time comes, a fierce conflict may break out when a certain couple of children sitting side by side…

                                                                    Dining Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 16967   Accepted: 7535 Description Cows are such finicky eaters. Each cow has a preference for certain foods and d…