2017年4月23日
Codeforces Round #410 (Div. 2) C
摘要： Description Mike has a sequence A = [a1, a2, ..., an] of length n. He considers the sequence B = [b1, b2, ..., bn] beautiful if the gcd of all its ele 阅读全文
posted @ 2017-04-23 00:03 樱花落舞 阅读(251) 评论(0) 推荐(0) 编辑