2020年7月3日
F. Maximum White Subtree
摘要： You are given a tree consisting of nn vertices. A tree is a connected undirected graph with n−1n−1 edges. Each vertex vv of this tree has a color assi 阅读全文
posted @ 2020-07-03 23:05 DeaL57 阅读(185) 评论(0) 推荐(0)