摘要：
Drainage Ditches Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 68414 Accepted: 26487 Description Every time it rains on Farmer John's fie 阅读全文
摘要：
Popular Cows Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 29908 Accepted: 12131 Description Every cow's dream is to become the most popu 阅读全文