摘要: 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, for 阅读全文
posted @ 2019-07-12 00:04 当然是斗笠呀 阅读(249) 评论(0) 推荐(0)