摘要: 题目:https://www.luogu.org/problemnew/show/P2900 题目描述 Farmer John is considering buying more land for the farm and has his eye on N (1 <= N <= 50,000) a 阅读全文
posted @ 2018-02-09 18:55 lonlyn 阅读(240) 评论(1) 推荐(1) 编辑