题目链接:http://poj.org/problem?id=3268 Silver Cow Party Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 24527   Accepted: 11164 Description One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big co…

Silver Cow Party Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 15156   Accepted: 6843 Description One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow party to be held at farm #X (1 ≤ X…

原题链接:http://poj.org/problem?id=3268 Silver Cow Party Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 15545   Accepted: 7053 Description One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow…

POJ 3268 Silver Cow Party Description One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow party to be held at farm #X (1 ≤ X ≤ N). A total of M (1 ≤ M ≤ 100,000) unidirectional (one-way roads connects…

Silver Cow Party Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 13611   Accepted: 6138 Description One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow party to be held at farm #X (1 ≤ X…

Description One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow party to be held at farm #X (1 ≤ X ≤ N). A total of M (1 ≤ M ≤ 100,000) unidirectional (one-way roads connects pairs of farms; road i re…

One cow from each of N farms (1 ≤ N ≤ 1000) conveniently numbered 1..N is going to attend the big cow party to be held at farm #X (1 ≤ X ≤ N). A total of M (1 ≤ M≤ 100,000) unidirectional (one-way roads connects pairs of farms; road i requires Ti (1…

非常感谢kuangbin专题啊,这道题一开始模拟邻接表做的,反向边不好处理,邻接矩阵的话舒服多了. 题意:给n头牛和m条有向边,每头牛1~n编号,求所有牛中到x编号去的最短路+回来的最短路的最大值. #include <iostream> #include <cstring> #include <cstdio> #include <algorithm> #include <queue> using namespace std; ; ; const…

其实还是从一个x点出发到所有点的最短路问题.来和回只需分别处理一下逆图和原图,两次SPFA就行了. #include<iostream> #include<cstdio> #include<cstdlib> #include<cstring> #include<string> #include<cmath> #include<map> #include<set> #include<vector> #…

Description One cow ≤ N ≤ ) conveniently numbered ..N ≤ X ≤ N). A total of M ( ≤ M ≤ ,) unidirectional (one-way roads connects pairs of farms; road i requires Ti ( ≤ Ti ≤ ) units of time to traverse. Each cow must walk to the party and, when the part…