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Re:不明白它是怎么处理样例的,怎么e,c,t有的不见了?

Posted by stephydx at 2008-08-20 13:14:48 on Problem 3602
In Reply To:不明白它是怎么处理样例的,怎么e,c,t有的不见了? Posted by:991glasses at 2008-05-21 00:02:31
很显然,你理解错题了。。。
题目是问你要用多少种字符,不是多少个字符

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