You are given an m x n integer matrix grid where each cell is either 0 (empty) or 1 (obstacle). Yo ...
The Shortest Path in Nya Graph Time Limit: MS Java Others Memory Limit: K Java Others Total Submission s : Accepted Submission s : Problem Description This is a very easy problem, your task is just ca ...
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You are given an m x n integer matrix grid where each cell is either 0 (empty) or 1 (obstacle). Yo ...
Given an n x n binary matrix grid, return the length of the shortest clear path in the matrix. If there is no clear path, return -1. A clear path ...
题目简介:给定一个带权有向图,再给定图中一个顶点(源点),求该点到其他所有点的最短距离,称为单源最短路径问题。 如下图,求点1到其他各点的最短距离 准备工作:以下为该题所需要用到的数据 int N; //保存顶点个数 int M; //保存边个数 int max; //用来设定 ...
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 ...
We are given a 2-dimensional `grid`. `"."` is an empty cell, `"#"` is a wall, `"@"` is the starting ...
Consider a directed graph, with nodes labelled 0, 1, ..., n-1. In this graph, each edge is either red or blue, and there could be self-edges ...
传送门 题意: 给你一张有向图,现在你需要删除一些边,每次删除的花费是边的权值,使得最短路增大,现在问你最小的花费。 题解: 如果要使得最短路增大,显然是删掉最短路上的一些边。我们发现,原图的最短路也能够形成一张\(\text{DAG}\),如果我们要使得最短路增大,等价于要求一个最小 ...
HDU最短路题目: 1.题号:2544 难度:1 题目地址:http://acm.hdu.edu.cn/showproblem.php?pid=2544分析小结:入门级别,甚至floyd都可以过。2.题号:2066 难度:2 题目地址:http://acm.hdu ...