POJ：3268-Silver Cow Party

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Dijkstra算法：POJ No 3268 Silver Cow Party

题目:http://poj.org/problem?id=3268 题解:使用 priority_queue队列对dijkstra算法进行优化 #include <iostream> #include <algorithm> #include <vector> #include <queue> #include <functional> #include <cstring> using namespace std; + ; ; str…

（poj）3268 Silver Cow Party 最短路

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…

【POJ】3268 Silver Cow Party

题目链接:http://poj.org/problem?id=3268 题意 :有N头奶牛,M条单向路.X奶牛开party,其他奶牛要去它那里.每头奶牛去完X那里还要返回.去回都是走的最短路.现在问这里面哪头奶牛走的路最长. 题解:对每个奶牛i与X做两次spfa.去回各一次.然后统计最长的..板子稍微改一改//但是我还是T了好几发,因为初始化数组的时候maxn开大了..QAQ.改小了就过了. 代码: #include<iostream> #include<stack> #inclu…

POJ 3268 Silver Cow Party （双向dijkstra）

题目链接:http://poj.org/problem?id=3268 Silver Cow Party Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 19211 Accepted: 8765 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 最短路—dijkstra算法的优化。

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…

POJ 3268 Silver Cow Party 最短路

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 （最短路径）

POJ 3268 Silver Cow Party (最短路径) 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 c…