摘要: Second Order Statistics (CF22A) 题解 这是一道CF的题目(Code Forces 22A) 题目(英文): Once Bob needed to find the second order statistics of a sequence of integer num 阅读全文
posted @ 2019-01-02 20:19 DATA-P 阅读(468) 评论(1) 推荐(0) 编辑