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Re:我也没读懂，ft

Posted by lookus at 2005-07-06 14:38:09 on Problem 2469
In Reply To:不太明白题意可以问吗？ Posted by:00403022 at 2005-07-06 14:19:32 
> 第一组数据中，前两个数是1 2，把第2张放到第1，再把第1张放到第2，不是有变回去了吗?
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