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这题容斥原理如何剪枝?高手支招

3538: 幸运数字

love_kd | 2013-04-14 23:32:04 | delete | edit
如果a是b的倍数。。那么就把a去掉。。这样就减少了很多数字。。 
Jacky007 | 2010-06-20 17:48:53 | delete | edit
 

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