摘要: 题目:Economic Difficulties 传送门:https://codeforces.com/contest/1263/problem/F 题意:给了两棵tree:Ta(拥有a个节点,节点编号为[n+1, n+a]) Tb(拥有b个节点, 节点编号: [n+ a + 1, n + a + 阅读全文
posted @ 2019-12-02 23:56 hjj1871984569 阅读(324) 评论(0) 推荐(0) 编辑