Drainage Ditches Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 76000   Accepted: 29530 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 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…

http://poj.org/problem?id=1273 用Dinic求最大流的模板题,注意会有重边. 邻接矩阵建图 #include<stdio.h> #include<string.h> #include<queue> #include<algorithm> using namespace std; ; const int INF = 0x3f3f3f3f; int flow[maxn][maxn];//残量 int m,n; int dis[max…

http://poj.org/problem?id=1273 Dinic算法 这是一道最大流的经典题 最大流尽量应该用边表,优于邻接矩阵(所以我写了邻接矩阵版的之后又写了个边表) 用了新学的Dinic算法 在每次找增广路之前先跑一遍bfs,把所有点的深度标记,按bfs记下的顺序找增广路,这条增广路上最小的边容量就是这条增广路的最大费用 跑出一条增广路之后,就开始更新现在的边剩余的容量,并建立反向边. #include<iostream> #include<cstdio> #incl…

http://poj.org/problem?id=1273 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 Jo…

Drainage Ditches Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 16314    Accepted Submission(s): 7748 Problem Description Every time it rains on Farmer John's fields, a pond forms over Bessie'…

Drainage Ditches Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 65146 Accepted: 25112 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 wate…

pid=1532">Drainage Ditches Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 8574    Accepted Submission(s): 3991 Problem Description Every time it rains on Farmer John's fields, a pond forms…

题目链接: Drainage Ditches Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 67475   Accepted: 26075 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 cover…

Drainage Ditches Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 68414   Accepted: 26487 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…