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回溯过程中nl，tn，ni的值都是要恢复的。

Posted by love8909 at 2009-01-25 11:57:21 on Problem 1011
In Reply To:Re:很着急呀。大牛水牛们帮帮我把 Posted by:windT at 2009-01-25 11:07:23 
> 可以肯定的是回溯的过程中，出现了很大的失误。。但是不知道如何用语言来实现。我看有的人用的是两个嵌套的递归。感觉差不多啊。而且回溯的过程中别人AC的代码也没有特别的状态表示啊。。

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