摘要: https://www.nowcoder.com/acm/contest/144/G 链接:https://www.nowcoder.com/acm/contest/144/G来源:牛客网 In Viridian forest there is a tree T formed by N nodes, 阅读全文
posted @ 2018-08-08 20:16 灬从此以后灬 阅读(197) 评论(0) 推荐(0) 编辑