Cow Marathon Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 3195   Accepted: 1596 Case Time Limit: 1000MS Description After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more exercise, so he has com…

题目连接 http://poj.org/problem?id=1985 Cow Marathon Description After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more exercise, so he has committed to create a bovine marathon for his cows to run. The marathon ro…

Cow Marathon Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 4185   Accepted: 2118 Case Time Limit: 1000MS Description After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more exercise, so he has com…

3363: [Usaco2004 Feb]Cow Marathon 奶牛马拉松 Description ​ 最近美国过度肥胖非常普遍,农夫约翰为了让他的奶牛多做运动,举办了奶牛马拉松．马拉 松路线要尽量长,所以,告诉你农场的地图(该地图的描述与上题一致),请帮助约翰寻找两个 最远农场间的距离． Input ​ 第1行:两个分开的整数N和M. ​ 第2到M+1行:每行包括4个分开的内容,Fi,F2,L,D分别描述两个农场的编号,道路的长 度,F1到F2的方向N,E,S,W． Output ​ 一个…

Cow Marathon Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 5496   Accepted: 2685 Case Time Limit: 1000MS Description After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more exercise, so he has com…

传送门 Cow Marathon Time Limit: 2000MS   Memory Limit: 30000K Total Submissions: 5362   Accepted: 2634 Case Time Limit: 1000MS Description After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more exercise, so he has…

题目链接:http://poj.org/problem?id=1985 After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more exercise, so he has committed to create a bovine marathon for his cows to run. The marathon route will include a pair o…

Description After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more exercise, so he has committed to create a bovine marathon for his cows to run. The marathon route will include a pair of farms and a path compr…

Description After hearing about the epidemic of obesity in the USA, Farmer John wants his cows to get more exercise, so he has committed to create a bovine marathon for his cows to run. The marathon route will include a pair of farms and a path compr…

这道题是我们考试的第一题,非常水,就是一个树的直径的板子.详见上一篇博客. #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> #define maxn 40000 using namespace std; ,ans,f_num; *maxn+],d[maxn+]; struct node { int u,v,w,nex; }edge[*maxn+]; inlin…