摘要：
Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 19390 Accepted: 5224 DescriptionIn order to make their son... 阅读全文
摘要：
题目描述Farmer John and his herd are playing frisbee. Bessie throws thefrisbee down the field, but it’s going straight to Mark the fi... 阅读全文