BFS+链表 代码改自某博客 #include<stdio.h> #include<iostream> #include<algorithm> #include<math.h> #include<string.h> #include<string> #include<map> #include<set> #include<vector> #include<queue> using nam…

题目链接 网络赛的水实在太深,这场居然没出线zzz,差了一点点,看到这道题的的时候就剩半个小时了.上面是官方的题意题解,打完了才知道暴力就可以过,暴力我们当时是想出来了的,如果稍稍再优化一下估计就过了zzz.去年有一场现场赛也是n=1000,n^3过了,看来关键时刻实在做不出来就得大胆暴力啊. #include <bits/stdc++.h> using namespace std; typedef long long ll; ; int a[maxn],nex[maxn]; int main…

#include<stdio.h> #include<iostream> #include<algorithm> #include<math.h> #include<string.h> #include<string> #include<map> #include<set> #include<vector> #include<queue> #define M(a,b) memset(a,…

Sparse Graph Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 689    Accepted Submission(s): 238 Problem Description In graph theory, the complement of a graph G is a graph H on the same vertic…

Sparse Graph Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1520    Accepted Submission(s): 537 Problem Description In graph theory, the complement of a graph G is a graph H on the same verti…

Sparse Graph Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others) Problem Description In graph theory, the complement of a graph G is a graph H on the same vertices such that two distinct vertices of H are adjacent if…

Sparse Graph Problem Description   In graph theory, the complement of a graph G is a graph H on the same vertices such that two distinct vertices of H are adjacent if and only if they are notadjacent in G. Now you are given an undirected graph G of N…

http://acm.hdu.edu.cn/showproblem.php?pid=5876 题意: 在补图中求s到其余各个点的最短路. 思路:因为这道题目每条边的距离都是1,所以可以直接用bfs来做. 处理的方法是开两个集合,一个存储当前顶点可以到达的点,另一个存储当前顶点不能到达的点.如果可以到达,那肯定由该顶点到达是最短的,如果不能,那就留着下一次再判. #include<iostream> #include<algorithm> #include<cstring>…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5876 题意: 有一个 n 个点无向图,再给你 m 对顶点, 代表着这 m 对顶点之间没有边, 除此之外每两个点之间都有一条边, 且权值为 1.然后还有一个源点 S, 让你计算源点到其他各点之间的最短距离,如果不存在则输出 -1.也就是说让你在所给的图的补图上求源点到其他各点的最短路径. 思路: 补图上求最短路径算是比较经典的题.在这里所求的最短路其实并不需要用到 dijkstra 之类的算法,由于每…

Problem Description In graph theory, the complement of a graph G is a graph H on the same vertices such that two distinct vertices of H are adjacent if and only if they are not adjacent in G. Now you are given an undirected graph G of N nodes and M b…