2019年10月28日
Square Difference
摘要： Alice has a lovely piece of cloth. It has the shape of a square with a side of length aa centimeters. Bob also wants such piece of cloth. He would pre 阅读全文
posted @ 2019-10-28 19:47 陈墨cacm 阅读(265) 评论(0) 推荐(0)