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Re:一直看不懂题目，后来知道求N！末尾的0个数！按5的倍数递归：5，10，15，20，25。。。。。。那么N中有几个约数有5的，由C++取整，刚好是N/5的值！In Reply To:一直看不懂题目，后来知道求N！末尾的0个数！按5的倍数递归：5，10，15，20，25。。。。。。那么N中有几个约数有5的，由C++取整，刚好是N/5的值！ Posted by:ccut_38102011 at 2012-12-03 21:15:02 Followed by: Post your reply here: |
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