2018年5月12日
Codeforces Round #479 (Div. 3) ABCDEF
摘要： A. Wrong Subtraction A. Wrong Subtraction Little girl Tanya is learning how to decrease a number by one, but she does it wrong with a number consistin 阅读全文
posted @ 2018-05-12 12:38 starry_sky 阅读(317) 评论(0) 推荐(0) 编辑