1837 被数据结构部分打击的不行了 换地 刷点简单的 图论第一题 floyd水过 #include <iostream> #include<cstdio> #include<cstring> #include<algorithm> #include<stdlib.h> #include<string> #include<map> using namespace std; ][]; #define INF 0xffffff…

http://acm.timus.ru/problem.aspx?space=1&num=1837 #include <cstdio> #include <cstring> #include <vector> #include <string> #include <iostream> #include <queue> #include <algorithm> using namespace std; vector&…

题目链接:http://acm.timus.ru/problem.aspx?space=1&num=1837 描述: Isenbaev是国外的一个大牛. 现在有许多人要参加ACM ICPC. 一共有n个组,每组3个人.同组的3个人都是队友. 大家都想知道自己与大牛的最小距离是多少. 大牛与自己的最小距离当然是0.大牛的队友和大牛的最小距离是1.大牛的队友的队友和大牛的最小距离是2……以此类推. 如果实在和大牛没有关系的只好输出undefined了. 第一行读入n.表示有n个组.1 ≤ n ≤ 1…

1837. Isenbaev's Number Time limit: 0.5 second Memory limit: 64 MB Vladislav Isenbaev is a two-time champion of Ural, vice champion of TopCoder Open 2009, and absolute champion of ACM ICPC 2009. In the time you will spend reading this problem stateme…

传送门 Description Given an array nums containing n + 1 integers where each integer is between 1 and n (inclusive), prove that at least one duplicate number must exist. Assume that there is only one duplicate number, find the duplicate one. Note: You mu…

2020-01-30 22:22:58 问题描述: 问题求解: 解法一:floyd 这个题目一看就是floyd解最合适,因为是要求多源最短路,floyd算法是最合适的,时间复杂度为O(n ^ 3). int inf = (int)1e9; public int findTheCity(int n, int[][] edges, int distanceThreshold) { int[][] dp = new int[n][n]; for (int i = 0; i < n; i++) Arra…

算法思路 路径矩阵 通过一个图的权值矩阵求出它的每两点间的最短路径矩阵.从图的带权邻接矩阵A=[a(i,j)] n×n开始,递归地进行n次更新,即由矩阵D(0)=A,按一个公式,构造出矩阵D(1):又用同样地公式由D(1)构造出D(2),以此类推.最后又用同样的公式由D(n-1)构造出矩阵D(n).矩阵D(n)的i行j列元素便是i号顶点到j号顶点的最短路径长度,称D(n)为图的距离矩阵,同时还可引入一个后继节点矩阵path来记录两点间的最短路径. 状态转移方程 其状态转移方程如下: map[i,…

UVA - 10048 Audiophobia Consider yourself lucky! Consider yourself lucky to be still breathing and having fun participating in this contest. But we apprehend that many of your descendants may not have this luxury. For, as you know, we are the dweller…

Given an array nums containing n + 1 integers where each integer is between 1 and n (inclusive), prove that at least one duplicate number must exist. Assume that there is only one duplicate number, find the duplicate one. Note: You must not modify th…

HDU 5418 Victor and World Time Limit:2000MS     Memory Limit:131072KB     64bit IO Format:%I64d & %I64u After trying hard for many years, Victor has finally received a pilot license. To have a celebration, he intends to buy himself an airplane and fl…