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Re:_べ`

Posted by chenqiong at 2007-07-21 23:50:41 on Problem 1019
In Reply To:分段,再一个一个区间把N对应的数字套住 Posted by:wrong123 at 2005-12-06 19:37:35
我也有这种想法,,可是写了半天没写出来,,数学不好,,,,

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