摘要: Codeforces 1060 b You are given a positive integer nn. Let S(x)S(x) be sum of digits in base 10 representation of xx, for example, S(123)=1+2+3=6S(123 阅读全文
posted @ 2018-10-06 10:32 我的秘密小屋 阅读(210) 评论(0) 推荐(0)