赤裸裸的floyd，思路很直接。很容易想到。 /*POJ: 3615 Cow Hurdles*/#include <iostream>#include <cstdio>#include <cstring>#include <string>#include <algorithm>#define MaxN 305#define MaxD (1 << 20)using namesp

描述 In the year 2008, the 29th Olympic Games will be held in Beijing. This will signify the prosperity of China and Beijing Olympics is to be a festival for people all over the world as well. Liu Xia

Description Farmer John 想让她的奶牛准备郡级跳跃比赛，贝茜和她的伙伴们正在练习跨栏。她们很累，所以她们想消耗最少的能量来跨栏。 显然，对于一头奶牛跳过几个矮栏是很容易的，但是高栏却很难。于是，奶牛们总是关心路径上最高的栏的高度。 奶牛的训练场中有 N (1 ≤ N ≤ 300) 个站台，分别标记为1..N。所有站台之间有M (1 ≤ M ≤ 25,000)条单向路径，第

题目链接：http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=2972                                       Hurdles of 110m In the year 2008, the 29th Olympic Games will be held in Beijing. This wi

题目描述 Farmer John wants the cows to prepare for the county jumping competition, so Bessie and the gang are practicing jumping over hurdles. They are getting tired, though, so they want to be able to u

Description Farmer John 想让她的奶牛准备郡级跳跃比赛，贝茜和她的伙伴们正在练习跨栏。她们很累，所以她们想消耗最少的能量来跨栏。 显然，对于一头奶牛跳过几个矮栏是很容易的，但是高栏却很难。于是，奶牛们总是关心路径上最高的栏的高度。 奶牛的训练场中有 N (1 ≤ N ≤ 300) 个站台，分别标记为1..N。所有站台之间有M (1 ≤ M ≤ 25,000)条单向路径