Codeforces 237C
摘要:
题目:DescriptionYou've decided to carry out a survey in the theory of prime numbers. Let us remind you that a prime number is a positive integer that ha... 阅读全文
posted @ 2014-07-28 17:27 tianxia2s 阅读(196) 评论(2) 推荐(0) 编辑