2020年8月15日
Codeforces Round #664 (Div. 2)
摘要： A. Boboniu Likes to Color Balls Boboniu gives you r red balls, g green balls, b blue balls, w white balls. He allows you to do the following operation 阅读全文
posted @ 2020-08-15 13:09 棉被sunlie 阅读(172) 评论(0) 推荐(1)