PIGS Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 20421   Accepted: 9320 Description Mirko works on a pig farm that consists of M locked pig-houses and Mirko can't unlock any pighouse because he doesn't have the keys. Customers come t…

题目链接:http://poj.org/problem?id=1459 Power Network Time Limit: 2000MS   Memory Limit: 32768K Total Submissions: 27074   Accepted: 14066 Description A power network consists of nodes (power stations, consumers and dispatchers) connected by power transp…

http://poj.org/problem?id=1459 嗯,网络流模板...多源点多汇点的图,超级汇点连发电厂,用户连接超级汇点 Status Accepted Time 391ms Memory 1588kB Length 2166 Lang G++ Submitted 2018-05-23 14:43:22 Shared RemoteRunId 18625420 #include <iostream> #include <string.h> #include <cm…

http://poj.org/problem?id=1273 这道题很值得反思,弄了一下午,交上去先是一直编译错误,而在本地运行没有问题, 原因可能是oj的编译器版本老旧不支持这样的写法 G[from].push_back((edge){to,cap,G[to].size()}); G[to].push_back((edge){from,0,G[from].size() - 1}); 这两句交上去是不能通过的,不知道网上很多人这样子贴出代码是怎样通过的(‘白书’的模板有问题的) 如果是照着‘白书…

Language: Default Power Network Time Limit: 2000MS   Memory Limit: 32768K Total Submissions: 23407   Accepted: 12267 Description A power network consists of nodes (power stations, consumers and dispatchers) connected by power transport lines. A node…

题意: 2 1 1 2 (0,1)20 (1,0)10 (0)15 (1)20 2 1 1 2 表示 共有2个节点,生产能量的点1个,消耗能量的点1个, 传递能量的通道2条:(0,1)20 (1,0)10 代表(起点,终点)最大传递的能量 (0)15 (产生能量的点)产生的最大能量(1)20 (消费能量的点)消费的最大能量 初学网络流,我想从基础练起:就先用EK算法写一遍 这道题看似很难,但其实只要加一个源点以及汇点,让所有的产生能量的点指向源点,让所有的消费能量的点指向汇点: #include…

Power Network Time Limit: 2000MS   Memory Limit: 32768K Total Submissions: 24930   Accepted: 12986 Description A power network consists of nodes (power stations, consumers and dispatchers) connected by power transport lines. A node u may be supplied…

Power Network Time Limit: 2000MS   Memory Limit: 32768K Total Submissions: 26688   Accepted: 13874 Description A power network consists of nodes (power stations, consumers and dispatchers) connected by power transport lines. A node u may be supplied…

#include<cstring> #include<cstdio> #define FOR(i,f_start,f_end) for(int i=f_startl;i<=f_end;i++) #define MS(arr,arr_value) memset(arr,arr_value,sizeof(arr)) ; ; int size; int n; const int inf=0x3f3f3f3f; using namespace std; int head[maxn];…

POJ 1459 Power Network / HIT 1228 Power Network / UVAlive 2760 Power Network / ZOJ 1734 Power Network / FZU 1161 (网络流,最大流) Description A power network consists of nodes (power stations, consumers and dispatchers) connected by power transport lines. A…