摘要:
Problem DescriptionThere are n people and m pairs of friends. For every pair of friends, they can choose to become online friends (com... 阅读全文
摘要:
Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 2555 Accepted Submission(s)... 阅读全文