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http://episte.math.ntu.edu.tw/articles/mm/mm_03_2_02/index.html有完整的思路。

Posted by tdzl2003 at 2005-09-19 22:07:40 on Problem 1067 
有了这个思路，就可以0MS过掉，不明白论坛里之前发的标程为什么用一个双精度数除法来计算n，n可以直接用一个整数减法得到。该程序30M，修改后0MS
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