2019年3月16日
Tree Restoration Gym - 101755F (并查集）
摘要： There is a tree of n vertices. For each vertex a list of all its successors is known (not only direct ones). It is required to restore the tree or to 阅读全文
posted @ 2019-03-16 16:54 断腿三郎 阅读(250) 评论(0) 推荐(0)