Flow Problem Time Limit: 5000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 11405    Accepted Submission(s): 5418 Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph, y…

裸最大流,做模板用 m条边,n个点,求最大流 #include <iostream> #include <cstdio> #include <cstring> #include <queue> #include <algorithm> using namespace std; ; const int INF = 0x7fffffff; int flow[N]; int cap[N][N]; int pre[N]; queue<int>…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3549 思路分析:该问题为裸的最大网络流问题,数据量不大,使用EdmondsKarp算法求解即可:需要注意的是该问题的点最多有15个,边的数目最多有1000个,所以该图中存在重边,需要将多个重边合为一条边: 代码如下: #include <queue> #include <vector> #include <cstdio> #include <climits> #…

题目链接 题意 裸的最大流. 学习参考 http://www.cnblogs.com/SYCstudio/p/7260613.html Code #include <bits/stdc++.h> #define inf 0x3f3f3f3f #define maxm 1010 #define maxn 20 using namespace std; typedef long long LL; struct Edge { int to, ne, c; }edge[maxm<<1];…

http://acm.hdu.edu.cn/showproblem.php?pid=3549 Ford-Fulkerson算法. #include <iostream> #include <cstdio> #include <cmath> #include <vector> #include <cstring> #include <string> #include <algorithm> #include <stri…

HDU 3549 Flow Problem(最大流) Time Limit: 5000/5000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) [Description] [题目描述] Network flow is a well-known difficult problem for ACMers. Given a graph, your task is to find out the maximum flow for t…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=3549 Flow Problem Time Limit: 5000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others) Total Submission(s): 5111    Accepted Submission(s): 2385 Problem Description Network flow is a well-kn…

题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=3549 Flow Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph, your task is to find out the maximum flow for the weighted directed graph. Input The first line of…

网络流 HDU 3549 Flow Problem 题目:pid=3549">http://acm.hdu.edu.cn/showproblem.php?pid=3549 用增广路算法进行求解.注意的问题有两个: 1. 每次增广的时候,反向流量也要进行更行.一開始没注意,WA了几次 ORZ 2. 对于输入的数据,容量要进行累加更新. // 邻接矩阵存储 #include <bits/stdc++.h> using namespace std; const int INF = 0…

Flow Problem Time Limit: 5000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 8199    Accepted Submission(s): 3814 Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph, yo…

Flow Problem 题意:N个顶点M条边,(2 <= N <= 15, 0 <= M <= 1000)问从1到N的最大流量为多少? 分析:直接使用Edmonds_Karp算法即可:下面是对增广路的一些理解和代码的解释: 残量:容量-流量: 增广:求出从源点到汇点的一条道路中所有残量的最小值d,把对应的所有边上的流量增加d,反向边(t->s)流量减少d(反向边的cap其实一直是0,只是flow为负了); 技巧:这次的ins的标号是从0开始的,即tot++,之前我都是++t…

Flow Problem Time Limit: 5000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others) Total Submission(s): 15345    Accepted Submission(s): 7234 Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph,…

Flow Problem Time Limit: 5000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 6674    Accepted Submission(s): 3112 Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph, yo…

Flow Problem Time Limit: 5000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 17963    Accepted Submission(s): 8464 Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph, y…

Flow Problem Time Limit: 5000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 28193    Accepted Submission(s): 12476 Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph,…

Flow ProblemTime Limit: 5000/5000 MS (Java/Others)    Memory Limit: 65535/32768 K (Java/Others)Total Submission(s): 21438    Accepted Submission(s): 10081 Problem DescriptionNetwork flow is a well-known difficult problem for ACMers. Given a graph, yo…

http://acm.hdu.edu.cn/showproblem.php?pid=3549 刚接触网络流,感觉有点难啊,只好先拿几道基础的模板题来练练手. 最大流的模板题. #include<iostream> #include<cstring> #include<string> #include<algorithm> #include<queue> using namespace std; int n, m, flow; ]; //路径记录…

Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph, your task is to find out the maximum flow for the weighted directed graph. Input The first line of input contains an integer T, denoting the number of test…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3549 Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph, your task is to find out the maximum flow for the weighted directed graph.   Input The first line of inp…

题目链接 Problem Description Network flow is a well-known difficult problem for ACMers. Given a graph, your task is to find out the maximum flow for the weighted directed graph. Input The first line of input contains an integer T, denoting the number of…

题意:给个赤裸的最大流问题. 思路:EK+BFS解决.跟HDU1532几乎一样的. #include <bits/stdc++.h> #define LL long long #define pii pair<int,int> #define INF 0x7f7f7f7f using namespace std; ; int cap[N][N]; int flow[N][N]; int a[N]; int path[N]; vector<int> vect[N]; in…

网络流基础题目,Edmonds_Karp可解. /* 3549 */ #include <iostream> #include <string> #include <map> #include <queue> #include <set> #include <stack> #include <vector> #include <deque> #include <algorithm> #include…

其实还是不是很懂dinic----- 抄了一个模板--- http://www.cnblogs.com/naturepengchen/articles/4403408.html 先放在这里--- #include<cstdio> #include<cstring> #include<iostream> #include<algorithm> #include<queue> using namespace std; ; << ) - ;…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3549 Network flow is a well-known difficult problem for ACMers. Given a graph, your task is to find out the maximum flow for the weighted directed graph. Input The first line of input contains an integer…

题目:http://acm.hdu.edu.cn/showproblem.php?pid=3549 模板题,白书上的代码... #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <queue> using namespace std; <<; ][],flow[][],n; int Edmonds_Karp(in…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3549 题意: 给你一个有向图,问你1到n的最大流. dinic模版 (n*n*m) #include <iostream> #include <cstdio> #include <cstring> using namespace std; ; //点个数 ; //边个数 const int inf = 0x3f3f3f3f; struct Edge { int to, ne…

九野的博客,转载请注明出处 :http://blog.csdn.net/acmmmm/article/details/11221561 题意:T个测试数据 下面n,m表示n个点m条有向带权边 m条边 问:从1-n最大流多少 测板子的题目,没啥思路 下面用的是dinic,开始没有考虑反向弧debug了好久,附赠一大坨测试数据 #include <iostream> #include <string> #include <cstring> #include <algo…

解题关键:使用的挑战程序设计竞赛上的模板,第一道网络流题目,效率比较低,且用不习惯的vector来建图. 看到网上其他人说此题有重边,需要注意下,此问题只在邻接矩阵建图时会出问题,邻接表不会存在的,也体现了邻接表的优越性? edge结构体的第三个变量为from的下标. 模板一: #include<bits/stdc++.h> #define MAX_V 17 #define inf 0x3f3f3f3f using namespace std; typedef long long ll; in…

#include <stdio.h> #include <string.h> #include <stdlib.h> #include <queue> #include <math.h> #define inf 0x3f3f3f3f using namespace std; ][],v[],pre[]; int n,m; int bfs(int s,int t) { memset(v,,sizeof(v)); memset(pre,-,sizeo…

Flow Problem HDU - 3549 Network flow is a well-known difficult problem for ACMers. Given a graph, your task is to find out the maximum flow for the weighted directed graph.  InputThe first line of input contains an integer T, denoting the number of t…