2015年10月29日
DP：Humble Numbers,丑数
摘要： 描述A number whose only prime factors are 2,3,5 or 7 is called a humble number. The sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, ... 阅读全文
posted @ 2015-10-29 00:39 紫蜘蛛之歌 阅读(214) 评论(0) 推荐(0) 编辑