摘要: 题意:You are given two arithmetic progressions: a1k + b1 and a2l + b2. Find the number of integers x such that L ≤ x ≤ R and x = a1k' + b1 = a2l' + b2, 阅读全文
posted @ 2019-08-17 12:04 易如鱼 阅读(310) 评论(0) 推荐(0) 编辑