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trie图应该可以的

Posted by sanpin at 2008-08-28 10:18:52 on Problem 1204
In Reply To:这个题大家都用什么方法做？ Posted by:felicia at 2007-09-06 11:45:13 
> 这个题大家都用什么方法做？
> 用字典树吗？貌似很慢
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