题意:给出一堆双向路,求从N点到1点的最短路径,最裸的最短路径,建完边之后直接跑dij或者spfa就行 dij: #include<stdio.h> #include<string.h> #include<queue> #include<algorithm> #include<vector> using namespace std; typedef pair<int,int> pii; const int INF=0x3f3f3f3f…

Til the Cows Come Home Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 38556   Accepted: 13104 Description Bessie is out in the field and wants to get back to the barn to get as much sleep as possible before Farmer John wakes her for the…

AC代码 POJ2387 Til the Cows Come Home Bessie is out in the field and wants to get back to the barn to get as much sleep as possible before Farmer John wakes her for the morning milking. Bessie needs her beauty sleep, so she wants to get back as quickly…

Til the Cows Come Home POJ-2387 这题是最简单的最短路求解题,主要就是使用dijkstra算法,时间复杂度是\(O(n^2)\). 需要注意的是,一定要看清楚题目的输入要求,是先输入边,再输入顶点,一开始我没看清,wrong answer了一次. package POJ; import java.util.*; public class POJ_2387 { private static int n,t; static int [][]w; static boole…

前两天自学了一点点最短路..看起来很简单的样子... 就去kuangbin的专题找了最简单的一道题练手..然后被自己萌萌的三重for循环超时虐的不要不要的~ 松弛虽然会但是用的十分之不熟练... 代码~ #include<stdio.h> #include<string.h> #include<algorithm> using namespace std; int tance[1005][1005]; bool vis[1005]; int dis[1005]; int…

题目连接:http://poj.org/problem?id=2387 题意:有N个点,给出从a点到b点的距离,当然a和b是互相可以抵达的,问从1到n的最短距离. 分析:最短路裸题. #include <cstdio> #include <cstring> #include <string> #include <cmath> #include <iostream> #include <algorithm> #include <q…

题面 Bessie is out in the field and wants to get back to the barn to get as much sleep as possible before Farmer John wakes her for the morning milking. Bessie needs her beauty sleep, so she wants to get back as quickly as possible. Farmer John's field…

A - Til the Cows Come Home Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Submit Status Practice POJ 2387 Description Bessie is out in the field and wants to get back to the barn to get as much sleep as possible before F…

题目链接: http://poj.org/problem?id=2387 Description Bessie is out in the field and wants to get back to the barn to get as much sleep as possible before Farmer John wakes her for the morning milking. Bessie needs her beauty sleep, so she wants to get ba…

//Accepted 4688 KB 63 ms #include <cstdio> #include <cstring> #include <iostream> #include <queue> #include <cmath> #include <algorithm> using namespace std; /** * This is a documentation comment block * 如果有一天你坚持不下去了,就想…