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这道题,有几个问题想问问,谢谢。

Posted by ioriyagami at 2005-01-29 18:18:18 on Problem 2180
是不是每一行的j,一定在前面出现过呢?
是不是每一个bale,它在放置的时候,不能放在一个封闭的空间里呢?
我的总是wa,不知是不是解错题意了。
谢谢。

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