摘要: 描述 Consider two natural numbers A and B. Let S be the sum of all natural divisors of AB. Determine S modulo 9901 (the rest of the division of S by 990 阅读全文
posted @ 2020-09-11 21:45 fhq_treap 阅读(166) 评论(0) 推荐(0) 编辑