摘要: Maximum Sum of Digits You are given a positive integer n. Let S(x)S(x) be sum of digits in base 10 representation of xx , for example, S(123)=1+2+3=6S 阅读全文
posted @ 2018-12-02 19:43 suvvm 阅读(388) 评论(0) 推荐(0) 编辑