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Re:1218是什么意思?

Posted by imhy123 at 2011-07-19 15:04:08 on Problem 1218
In Reply To:1218是什么意思? Posted by:liuwencheng at 2010-11-07 13:12:58
我也没看懂,百度了一下:从1到N,每次把序号的倍数的那些门转换状态(关的开上,开的关上)求最后有几张门开着~

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