摘要：
Sumsets Time Limit: 2000MS Memory Limit: 200000K Total Submissions: 18373 Accepted: 7190 Description Farmer John commanded his cows to search for diff 阅读全文
摘要：
Cow Bowling Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 18561 Accepted: 12360 Description The cows don't use actual bowling balls when 阅读全文