摘要：
The Perfect StallTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 18657 Accepted: 8503DescriptionFarmer John completed his new barn just las... 阅读全文
摘要：
Drainage DitchesTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 56802 Accepted: 21824DescriptionEvery time it rains on Farmer John's fields,... 阅读全文