题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3605 Escape Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 8944 Accepted Submission(s): 2084 Problem Description 2012 If this is the end of the…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3605 Escape Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 10349 Accepted Submission(s): 2476 Problem Description 2012 If this is the end of t…
2012 If this is the end of the world how to do? I do not know how. But now scientists have found that some stars, who can live, but some people do not fit to live some of the planet. Now scientists want your help, is to determine what all of people c…
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3605 Escape Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Total Submission(s): 8001 Accepted Submission(s): 1758 Problem Description 2012 If this is the end of th…
Escape Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 10382 Accepted Submission(s): 2485 Problem Description 2012 If this is the end of the world how to do? I do not know how. But now scient…
Escape Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 8747 Accepted Submission(s): 2026 Problem Description 2012 If this is the end of the world how to do? I do not know how. But now scienti…
Jamie's Contact Groups Time Limit: 15000/7000 MS (Java/Others) Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 747 Accepted Submission(s): 303 Problem Description Jamie is a very popular girl and has quite a lot of friends, so she…
二分匹配:二分图的一些性质 二分图又称作二部图,是图论中的一种特殊模型. 设G=(V,E)是一个无向图,如果顶点V可分割为两个互不相交的子集(A,B),并且图中的每条边(i,j)所关联的两个顶点i和j分别属于这两个不同的顶点集(i in A,j in B),则称图G为一个二分图. 1.一个二分图中的最大匹配数等于这个图中的最小点覆盖数 König定理是一个二分图中很重要的定理,它的意思是,一个二分图中的最大匹配数等于这个图中的最小点覆盖数.如果你还不知道什么是最小点覆盖,我也在这里说一下:假如选…
