[笔记] 树形问题2023-12-02 12:19:52树形问题专题 图论悬首绝对不容错过的经典树形问题！ Tip：本文不会详细分析树剖，我已经有一篇文章专门讲树剖了。 LCA DFS 序 树上差分 树的直径 树的重心 上一篇：git 报错 ：Updates were rejected because the tip of your current branch is behind 解决方法下一篇：Updates were rejected because the tip of your current branch is behind