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Re:绝密警戒。为保证同学们做题质量,建议最好不要看先。WA的没办法再看吧。

Posted by xiongli at 2010-08-08 23:59:21 on Problem 1988
In Reply To:绝密警戒。为保证同学们做题质量,建议最好不要看先。WA的没办法再看吧。 Posted by:denghongchao at 2009-08-24 22:17:27
> 没用递归.WA了20次。引以为戒。
非递归也可以ac的

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