最大独立集证明参考:https://blog.csdn.net/qq_34564984/article/details/52778763 最大独立集证明: 上图,我们用两个红色的点覆盖了所有边.我们证明的前提条件是已经达到最小覆盖. 即条件1.已经覆盖所有边,条件2.所用的点数最小 首先我们来证明蓝色点组成的是一个独立集:如果有两个蓝色点间有边相连,那么这条 边则没有被覆盖,则与条件1矛盾.因此是独立集. 再来证明这个独立集最大: 如果我们要再增加这个独立集中的点,则需要把某个红点变 成蓝点.而…

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…

Girls and Boys Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 8470    Accepted Submission(s): 3890 Problem Description the second year of the university somebody started a study on the romant…

称号: Girls and Boys Time Limit: 20000/10000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 189 Accepted Submission(s): 127   Problem Description the second year of the university somebody started a study on the romanti…

Girls and Boys Time Limit: 20000/10000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6942    Accepted Submission(s): 3118 Problem Description the second year of the university somebody started a study on the romant…