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反正要把题意理解为既可以组合,也可以替换,也可以什么都不做,才能过。WA了n次才明白。

Posted by piaolingqingsi at 2008-01-24 11:15:15 on Problem 2159
In Reply To:这题测试数据是不是有误?! Posted by:hongtaos at 2007-12-06 10:22:11


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