摘要：
Invitation Cards Time Limit: 8000MS Memory Limit: 262144K Total Submissions: 33435 Accepted: 11104 Description In the age of television, not many peop 阅读全文
摘要：
Object Clustering Time Limit: 2000MS Memory Limit: 131072K Total Submissions: 2640 Accepted: 806 Description We have N (N ≤ 10000) objects, and wish t 阅读全文