题目链接:https://vjudge.net/problem/HDU-4280 Island Transport Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 9945    Accepted Submission(s): 3214 Problem Description In the vast waters far far aw…

In the vast waters far far away, there are many islands. People are living on the islands, and all the transport among the islands relies on the ships. You have a transportation company there. Some routes are opened for passengers. Each route is a st…

Island Transport Problem Description In the vast waters far far away, there are many islands. People are living on the islands, and all the transport among the islands relies on the ships. You have a transportation company there. Some routes are open…

引水入城 201703-5 这从题目分析来看很像最大流的问题,只需要增加一个超级源点和一个超级汇点就可以按照题意连边再跑最大流算法. 因为数据量太大了,肯定会超时.但是没有想到可行的解决方法. #include<bits/stdc++.h> using namespace std; const long long INF=0XFFFFFFFF; const int maxn=4500016; /* run this program using the console pauser or add…

ISAP求最大流模板 #include<cstdio> #include<cstring> #include<algorithm> #include<iostream> #include<queue> using namespace std; ; const int inf=1e9; struct node { int from,to,next; int cap; }edge[maxn*]; int tol; int head[maxn]; in…

Island Transport Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 13187    Accepted Submission(s): 4156 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4280 Description: In the vast waters far f…

HDU 4280 Island Transport(网络流,最大流) Description In the vast waters far far away, there are many islands. People are living on the islands, and all the transport among the islands relies on the ships. You have a transportation company there. Some route…

链接: https://vjudge.net/problem/HDU-4280 题意: In the vast waters far far away, there are many islands. People are living on the islands, and all the transport among the islands relies on the ships. You have a transportation company there. Some routes a…

Island Transport Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 6217    Accepted Submission(s): 1965 Problem Description In the vast waters far far away, there are many islands. People are l…

P3376 [模板]网络最大流( Edmonds-krap.Dinic.ISAP 算法) 题目描述 如题,给出一个网络图,以及其源点和汇点,求出其网络最大流. 输入格式 第一行包含四个正整数N.M.S.T,分别表示点的个数.有向边的个数.源点序号.汇点序号. 接下来M行每行包含三个正整数ui.vi.wi,表示第i条有向边从ui出发,到达vi,边权为wi(即该边最大流量为wi) 输出格式 一行,包含一个正整数,即为该网络的最大流. 输入输出样例 输入 #1 复制 4 5 4 3 4 2 30 4…