摘要：
Farey Sequence Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 18507 Accepted: 7429 Description The Farey Sequence Fn for any integer n wit 阅读全文
摘要：
Longge's problem Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 9190 Accepted: 3073 Description Longge is good at mathematics and he likes 阅读全文