2020年7月30日
[CF从零单排#21]339B - Xenia and Ringroad
摘要： 题目来源：http://codeforces.com/problemset/problem/339/B Xenia lives in a city that has n houses built along the main ringroad. The ringroad houses are num 阅读全文
posted @ 2020-07-30 22:14 gdgzliu 阅读(113) 评论(0) 推荐(0) 编辑