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"The least lexicographic string he can make. Every line (except perhaps the last one) contains the initials of 80 cows ('A'..'Z') in the new line.

Posted by smallbox at 2010-10-07 18:38:30 on Problem 3623 and last updated at 2010-10-07 18:39:16 
不知道是我脑残还是出题的人脑残,怎么看也看不懂这句话.
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