2019年4月7日
CodeForces - 997B
摘要： Let's introduce a number system which is based on a roman digits. There are digits I, V, X, L which correspond to the numbers 11, 55, 1010 and 5050 re 阅读全文
posted @ 2019-04-07 09:30 犹疑照颜色 阅读(326) 评论(0) 推荐(0) 编辑