find the longest of the shortest Time Limit: 1000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2702    Accepted Submission(s): 974 Problem Description Marica is very angry with Mirko because he found a new gi…

传送门: http://acm.hdu.edu.cn/showproblem.php?pid=3790 最短路径问题 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 33731    Accepted Submission(s): 9888 Problem Description 给你n个点,m条无向边,每条边都有长度d和花费p,给你起点…

find the longest of the shortest Time Limit: 1000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2524    Accepted Submission(s): 888 Problem Description Marica is very angry with Mirko because he found a new gi…

Problem Description Marica is very angry with Mirko because he found a new girlfriend and she seeks revenge.Since she doesn't live in the same city, she started preparing for the long journey.We know for every road how many minutes it takes to come f…

http://acm.hdu.edu.cn/showproblem.php?pid=1595 这道题我用spfa在枚举删除边的时候求最短路超时,改用dijkstra就过了. #include <cstdio> #include <queue> #include <cstring> #include <algorithm> #define maxn 1001 using namespace std; <<; int g[maxn][maxn]; i…

http://acm.hdu.edu.cn/showproblem.php?pid=1595 大致题意: 给一个图.让输出从中删除随意一条边后所得最短路径中最长的. . 思路: 直接枚举每条边想必是不行的.事实上有些边是不须要枚举的,由于删除它们并不影响起点到终点的最短路.起作用的边都是未删边前的最短路径上的边,删除它们最短距离肯定增大,仅仅需在这些最短距离中求最大的就可以. 记录最短路径上的边,仅仅需一个pre数组记录松弛时每一个点的前驱节点. #include <stdio.h> #inc…

转载请注明出处:http://blog.csdn.net/a1dark 分析:经典的次短路问题.dijkstra或者SPFA都能做.先找出最短路.然后依次删掉没条边.为何正确就不证明了.了解思想直接A掉.注意记录路径 #include<stdio.h> #include<string.h> #define INF 0x7ffffff #define N 1010 int mpt[N][N]; int path[N]; int n,m; void init(){ for(int i=…

传送门: http://acm.hdu.edu.cn/showproblem.php?pid=3339 In Action Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7869    Accepted Submission(s): 2674 Problem Description Since 1945, when the first…

传送门: http://acm.hdu.edu.cn/showproblem.php?pid=2544 最短路 Time Limit: 5000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 83843    Accepted Submission(s): 36272 Problem Description 在每年的校赛里,所有进入决赛的同学都会获得一件很漂亮的t-sh…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1874 畅通工程续 Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 67183    Accepted Submission(s): 25961 Problem Description 某省自从实行了很多年的畅通工程计划后,终于修建了很多路.不…