You are in charge of setting up the press room for the inaugural meeting of the United Nations Internet eXecutive (UNIX), which has an international mandate to make the free flow of information and ideas on the Internet as cumbersome and bureaucratic…

链接: http://poj.org/problem?id=1087 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=82835#problem/C http://acm.hust.edu.cn/vjudge/contest/view.action?cid=88230#problem/J(密码:0817) n个插座,m个电器及其对应的插座,k个转化器,前一个插座可以转化为后一个插座,问最少有多少设备没有插座用,转换器数量不限最大流,源点…

题目大意:这个题意有些蛋疼,看了很大会才明白什么意思,有N个插座,这些插座都是有类型的只能给这种类型的电器充电,下面接着给了M种电器,和电器的插头类型,还有K种转换器,可以把一种类型转换成另一种,转换器也是可以串联使用的. 输入说明: 首先输入的是一个N,下面有N种插座,每种插座都有一个字符串代表,接着输入一个M,表示有M个电器需要充电,输入的每行有一个电器和它需要的插座类型,然后输入一个K,下面有K个转换器. 分析:这个英文写的这么长确实比较难理解,不过看懂题意后也是比较容易了,可以让电器给可…

题意: 几种插头,每一种都只有一个,但有无限个插头转换器,转换器(a,b) 意味着 可以把b转换为a,有几个设备,每个设备对应一种插头,求所不能匹配插头的设备数量 这个题可以用二分图做 , 我用的是最大流,最后用设备数 减去 最大匹配数即可 #include <iostream> #include <cstring> #include <cstdio> #include <algorithm> #include <cmath> #include…

题意:有N个插头,M个设备和K种转换器.要求插的设备尽量多,问最少剩几个不匹配的设备. 解法:给读入的各种插头编个号,源点到设备.设备通过转换器到插头.插头到汇点各自建一条容量为1的边.跑一次最大流就可得到最多匹配的设备数. 注意啊,我这个代码在神奇的地方死循环了--判断队列为空的语句......Σ( ° △ °|||)︴所以大家主要看"行文思路" ? :-) 1 #include<cstdio> 2 #include<cstdlib> 3 #include&l…

POJ 1087 A Plug for UNIX / HDU 1526 A Plug for UNIX / ZOJ 1157 A Plug for UNIX / UVA 753 A Plug for UNIX / UVAlive 5418 A Plug for UNIX / SCU 1671 A Plug for UNIX (网络流) Description You are in charge of setting up the press room for the inaugural meet…

C - A Plug for UNIXTime Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=88038#problem/C Description You are in charge of setting up the press room for the inaugural meeting of the United Nations Internet…

A Plug for UNIX Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 14862   Accepted: 5026 Description You are in charge of setting up the press room for the inaugural meeting of the United Nations Internet eXecutive (UNIX), which has an int…

C - A Plug for UNIX    You are in charge of setting up the press room for the inaugural meeting of the United Nations Internet eXecutive (UNIX), which has an international mandate to make the free flow of information and ideas on the Internet as cumb…

A Plug for UNIX Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 14786 Accepted: 4994 Description You are in charge of setting up the press room for the inaugural meeting of the United Nations Internet eXecutive (UNIX), which has an interna…