Problem Description When YY was a boy and LMY was a girl, they trained for NOI (National Olympiad in Informatics) in GD team. One day, GD team’s coach, Prof. GUO asked them to solve the following shortest-path problem. There is a weighted directed mu…

Shortest Path Time Limit: 1000MS Memory Limit: 32768KB 64bit IO Format: %I64d & %I64u SubmitStatus Description When YY was a boy and LMY was a girl, they trained for NOI (National Olympiad in Informatics) in GD team. One day, GD team's coach, Prof. G…

题目:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=1760 题意:给你一个一个n*n(n<=100)的有向图,问你从s到t有多少条路径最短且这些路径没有边重合. 分析: 反过来想,如果我们知道哪些边是最短路径上的边,那么表明这条边必须只能走一边,于是可以把这样的边容量设为1,然后跑s到t的最大流. 于是问题的关键就是如何找出在最短路径上的边. 可以先用floyd算出每两点之间的最短路d[i][j] 如果一条边(u,v)满足…

An undirected, connected graph of N nodes (labeled 0, 1, 2, ..., N-1) is given as graph. graph.length = N, and j != i is in the list graph[i] exactly once, if and only if nodes i and j are connected. Return the length of the shortest path that visits…

The Shortest Path Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2440    Accepted Submission(s): 784 Problem Description There are N cities in the country. Each city is represent by a matrix si…

题目链接:pid=3631" style="font-size:18px">http://acm.hdu.edu.cn/showproblem.php?pid=3631 Shortest Path Time Limit: 3000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3962    Accepted Submission(s): 9…

版权声明:本文为博主原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接和本声明. 本文链接:https://blog.csdn.net/m0_37609579/article/details/100110115 一.最短路径问题 [google笔试题]一个环形公路,给出相邻两点的距离(一个数组),求任意两点的最短距离,要求空间复杂度不超过O(N). 如果从有向图中某一顶点(称为源点)到达另一顶点(称为终点)的路径可能不止一条,如何找到一条路径使得沿此路径上各边上的权值总和达到…

The Shortest Path Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3164    Accepted Submission(s): 1030 Problem Description There are N cities in the country. Each city is represent by a matrix s…

Shortest Path Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 627    Accepted Submission(s): 204 Problem Description There is a path graph G=(V,E) with n vertices. Vertices are numbered from 1…

The Shortest Path in Nya Graph Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 13070    Accepted Submission(s): 2794 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4725 Description: This is a ve…