POJ3259 Wormholes 【Bellmanford推断是否存在负回路】

【POJ3259 Wormholes 【Bellmanford推断是否存在负回路】】的更多相关文章

POJ3259 Wormholes 【Bellmanford推断是否存在负回路】

版权声明:本文为博主原创文章,未经博主同意不得转载. https://blog.csdn.net/u011775691/article/details/27612757 非常easy的bellmanford题目.这里比較具体:http://blog.csdn.net/lyy289065406/article/details/6645790 直接代码 #include <cstdio> #include <cstdlib> #include <iostream> #inc…

poj-3259 Wormholes（无向、负权、最短路之负环判断）

http://poj.org/problem?id=3259 Description While exploring his many farms, Farmer John has discovered a number of amazing wormholes. A wormhole is very peculiar because it is a one-way path that delivers you to its destination at a time that is BEFOR…

POJ3259——Wormholes(Bellman-Ford+SPFA)

Wormholes DescriptionWhile exploring his many farms, Farmer John has discovered a number of amazing wormholes. A wormhole is very peculiar because it is a one-way path that delivers you to its destination at a time that is BEFORE you entered the worm…

POJ No 3259 Wormholes Bellman-Ford 判断是否存在负图

题目:http://poj.org/problem?id=3259 题意:主要就是构造图, 然后判断,是否存在负图,可以回到原点 /* 2 3 3 1 //N, M, W 1 2 2 1 3 4 2 3 1 3 1 3 //虫洞 3 2 1 //N, M, W 1 2 3 2 3 4 3 1 8 */ #include <iostream> #include <cstring> using namespace std; + + ) * + ; + ; int N, M, W; //…

poj3259 Wormholes【Bellman-Ford或 SPFA判断是否有负环】

题目链接:poj3259 Wormholes 题意:虫洞问题,有n个点,m条边为双向,还有w个虫洞(虫洞为单向,并且通过时间为倒流,即为负数),问你从任意某点走,能否穿越到之前. 贴个SPFA代码: #include<cstdio> #include<cstring> #include<algorithm> #include<iostream> #include<string> #include<stack> #include<…

POJ3259 :Wormholes(SPFA判负环）

POJ3259 :Wormholes 时间限制:2000MS 内存限制:65536KByte 64位IO格式:%I64d & %I64u 描述 While exploring his many farms, Farmer John has discovered a number of amazing wormholes. A wormhole is very peculiar because it is a one-way path that delivers you to its destin…