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 ...
題目簡介:給定一個帶權有向圖,再給定圖中一個頂點(源點),求該點到其他所有點的最短距離,稱為單源最短路徑問題。 如下圖,求點1到其他各點的最短距離 准備工作:以下為該題所需要用到的數據 int N; //保存頂點個數 int M; //保存邊個數 int max; //用來設定 ...
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 ...
傳送門 題意: 給你一張有向圖,現在你需要刪除一些邊,每次刪除的花費是邊的權值,使得最短路增大,現在問你最小的花費。 題解: 如果要使得最短路增大,顯然是刪掉最短路上的一些邊。我們發現,原圖的最短路也能夠形成一張\(\text{DAG}\),如果我們要使得最短路增大,等價於要求一個最小 ...
HDU最短路題目: 1.題號:2544 難度:1 題目地址:http://acm.hdu.edu.cn/showproblem.php?pid=2544分析小結:入門級別,甚至floyd都可以過。2.題號:2066 難度:2 題目地址:http://acm.hdu ...