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Re:3096的答案是错的，害我白做错了一道题！！In Reply To:3096的答案是错的，害我白做错了一道题！！ Posted by:jackson_chenhua at 2006-11-23 23:00:33 你摘错啦,当D=2时,意思是中间间隔两个字母,所以只有一对AB(开头的A和结尾的B) Followed by: Post your reply here: |
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