题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1068 思路: 求一集合满足,两两之间没有恋爱关系 思路: 最大独立点集=顶点数-最大匹配数 这里给出的关系,看似有向边,实则是无向边,那么按照二分匹配处理的话,相当于一个人看作两个人来用,最后还是顶点数目-最大二分匹配数 因为之间一个人当作两个人用,二分匹配数目减半,即 = n - match()/2 或者也可以写成 = ( 2n -  match() )/2 更容易理解 题目中n的大小没有说明,最…

题目地址:http://acm.hdu.edu.cn/showproblem.php?pid=1068 本题求二分图最大独立点集.因为最大独立点集=顶点数-最大匹配数.所以转化为求最大匹配.因为没有给出男女,所以每个人都用了两遍,所以结果应该除以2. #include<cstdio> #include<iostream> #include<string.h> #include<algorithm> #include<math.h> #includ…

                                                            Girls and Boys Time Limit: 5000MS   Memory Limit: 10000K Total Submissions: 12192   Accepted: 5454 Description In the second year of the university somebody started a study on the romantic r…

HDU 1068 :题目链接 题意:一些男孩和女孩,给出一些人物关系,然后问能找到最多有多少个人都互不认识. 转换一下:就是大家都不认识的人,即最大独立集合 #include <iostream> #include <cstdio> #include <cstdlib> #include <cstring> #include <algorithm> #include <math.h> #define init(a) memset(a,…

Girls and Boys Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) [Problem Description] the second year of the university somebody started a study on the romantic relations between the students. The relation “romant…

Girls and Boys Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6867    Accepted Submission(s): 3083 Problem Description the second year of the university somebody started a study on the romant…

Girls and Boys Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 7044    Accepted Submission(s): 3178 Problem Description the second year of the university somebody started a study on the roman…

Girls and Boys Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 12246    Accepted Submission(s): 5768 Problem Description the second year of the university somebody started a study on the roma…

Girls and BoysTime Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 13556    Accepted Submission(s): 6385 Problem Descriptionthe second year of the university somebody started a study on the romanti…

题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=1068 Problem Description the second year of the university somebody started a study on the romantic relations between the students. The relation "romantically involved" is defined between one girl…