摘要：
Oulipo Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 46290 Accepted: 18452 Description The French author Georges Perec (1936–1982) once w 阅读全文
摘要：
Cell Phone Network Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 7127 Accepted: 2549 Description Farmer John has decided to give each of 阅读全文