2020年6月26日
Educational Codeforces Round 90
摘要： A. Donut Shops There are two rival donut shops. The first shop sells donuts at retail: each donut costs a dollars. The second shop sells donuts only i 阅读全文
posted @ 2020-06-26 17:24 棉被sunlie 阅读(306) 评论(0) 推荐(0)