摘要：
Gold Balanced LineupTime Limit: 2000MSMemory Limit: 65536KTotal Submissions: 10360Accepted: 3086DescriptionFarmer John's N cows (1 ≤ N ≤ 100,000) share many similarities. In fact, FJ has been able to narrow down the list of features shared by his cows to a list of only K different features (1 ≤ 阅读全文
