题目: A clique is a complete graph, in which there is an edge between every pair of the vertices. Given a graph with N vertices and M edges, your task is to count the number of cliques with a specific size S in the graph. Input: The first line is the n…

A clique is a complete graph, in which there is an edge between every pair of the vertices. Given a graph with N vertices and M edges, your task is to count the number of cliques with a specific size S in the graph.  InputThe first line is the number…

Counting Cliques Time Limit: 8000/4000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 539    Accepted Submission(s): 204 Problem Description A clique is a complete graph, in which there is an edge between every pair…

Counting Cliques Time Limit: 8000/4000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1855    Accepted Submission(s): 735 Problem Description A clique is a complete graph, in which there is an edge between every pai…

Counting Cliques HDU - 5952 OJ-ID: hdu-5952 author:Caution_X date of submission:20191110 tags:dfs,graph description modelling:给定点数,边数,问包含有x个点的完全图种类数 major steps to solve it:(1)选择一个点作为起点,记录该起点的所有连通点,dfs(该点)此时完全图有两个点(2)遍历(1)中选定点的连通点,若构成完全图,则dfs(能够与(1)的…

题目链接 题意 给定一个\(n个点,m条边\)的无向图,找出其中大小为\(s\)的完全图个数\((n\leq 100,m\leq 1000,s\leq 10)\). 思路 暴搜. 搜索的时候判断要加进来的点是否与当前集合中的每个点之间都有边.搜到集合大小为\(s\)就答案+1. 注意 如果不做处理的话,每个完全图都会被搜到\(2^s\)次,其中只有一次是必要的. 因此,一个很显然的常用的考虑是:搜索的时候下一个节点比当前的节点编号大,这样就肯定不会搜重复了. 再稍微转化一下,在建图的时候就可以只…

题目:题目链接 思路:这道题vj上Time limit:4000 ms,HDU上Time Limit: 8000/4000 MS (Java/Others),且不考虑oj测评机比现场赛慢很多,但10月5号的计蒜客重现赛只给了1000ms确实有点过分吧,好久没有做这种简单dfs做到自闭了,,,题目并不难,注意剪枝就好了,建图时建标号小的点指向标号大的点的单向边,这样按标号从小到大搜一遍就好了,完全图的任意两个点都要有边,按点的标号搜到第n-s+1个点,因为后面所有的点加起来都组不成点数为s的完全子…

Counting Offspring Time Limit: 15000/5000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Problem Description You are given a tree, it’s root is p, and the node is numbered from 1 to n. Now define f(i) as the number of nodes whose numbe…

题目链接 Problem Description A while ago I had trouble sleeping. I used to lie awake, staring at the ceiling, for hours and hours. Then one day my grandmother suggested I tried counting sheep after I'd gone to bed. As always when my grandmother suggests…

题目大意:给你一个m*n的矩阵,里面有两种符号,一种是 @ 表示这个位置有油田,另一种是 * 表示这个位置没有油田,现在规定相邻的任意块油田只算一块油田,这里的相邻包括上下左右以及斜的的四个方向相邻的位置.要你求出一共有多少块油田. 解题报告:用dfs,我的做法是首先在输入的时候将每个有油田的位置标记为1,否则标记为0,然后枚举每一个点,如果这个点有油田,则以这个点为起点,像周围的八个方向搜索,搜到了相邻的点就标记为2,当然这里也可以标记为0,只要是将已经搜过的点标记掉就是了,当dfs退出到ma…