2020年1月18日
Codeforces Round #428 (Div. 2) C-Journey
摘要： There are n cities and n - 1 roads in the Seven Kingdoms, each road connects two cities and we can reach any city from any other by the roads. Theon a 阅读全文
posted @ 2020-01-18 15:44 _HonEy 阅读(195) 评论(0) 推荐(0) 编辑