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还是first的递规好。呵呵In Reply To:Re:不用循环吧 这样就好了 Posted by:first at 2006-03-09 17:17:03 关键是关系很明确，记得看王××的书的讲递规的时候第一个例子好像就类似这题。还可以用DP做，不过都一样。 Followed by: Post your reply here: |
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