摘要: DescriptionWe know that prime numbers are positive integers that have exactly two distinct positive divisors. Similarly, we'll call a positive integer 阅读全文
posted @ 2019-02-17 16:20 陈墨cacm 阅读(160) 评论(0) 推荐(0)
摘要: Alex doesn't like boredom. That's why whenever he gets bored, he comes up with games. One long winter evening he came up with a game and decided to pl 阅读全文
posted @ 2019-02-17 10:01 陈墨cacm 阅读(328) 评论(0) 推荐(0)