Drainage Ditches Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 71559   Accepted: 27846 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…

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 ditches so t…

Drainage Ditches Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 70588   Accepted: 27436 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…

Drainage Ditches Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 91585   Accepted: 35493 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…

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 ditches so t…

#include<iostream> /* 题意:就是寻找从源点到汇点的最大流! 要注意的是每两个点的流量可能有多个,也就是说有重边,所以要把两个点的所有的流量都加起来 就是这两个点之间的流量了! 思路:建图之后直接套用最大流算法(EK, 或者是Dinic算法) 图解Dinic算法流程! */ #include<queue> #include<cstring> #include<cstdio> #include<algorithm> #defin…

最大流模板题 大部分Edmond-Karp算法代码都是邻接矩阵实现,试着改成了邻接表. #include <iostream> #include <cstdio> #include <queue> #include <cstring> using namespace std; // 裸最大流 const int N = 2005; const int M = 2005; const int INF = 0x7fffffff; // 邻接表 struct Ed…

#include<iostream> #include<cstdio> #include<cstdlib> #include<cstring> #include<algorithm> #include<cmath> #include<vector> using namespace std; ; const int INF=0x7fffffff; int n,m;//n:edges,m:points struct node…

Drainage Ditches Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 67823   Accepted: 26209 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…

总时间限制: 1000ms 内存限制: 65536kB描述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…