摘要：
Sumsets Time Limit: 2000MS Memory Limit: 200000K Total Submissions: 19599 Accepted: 7651 Description Farmer John commanded his cows to search for diff 阅读全文
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Cow Bowling Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 19864 Accepted: 13172 Description The cows don't use actual bowling balls when 阅读全文
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Protecting the Flowers Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 7923 Accepted: 3196 Description Farmer John went to cut some wood an 阅读全文
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Stripies Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 17779 Accepted: 8013 Description Our chemical biologists have invented a new very 阅读全文