2641. 二叉树中的表兄弟节点 II
Medium | Hash Table, Tree, Depth-First Search, Breadth-First Search, Binary Tree
Tree
2646. 最小化旅行的价格总和
Hard | Array, Dynamic Programming, Tree, Depth-First Search, Graph Theory
2673. 使二叉树中所有路径的代价相等
Medium | Array, Dynamic Programming, Greedy, Tree, Binary Tree
2846. 树中边权重均衡查询的最小操作数
Hard | Array, Dynamic Programming, Bit Manipulation, Tree, Depth-First Search
2867. 树中的有效路径数目
Hard | Math, Dynamic Programming, Tree, Depth-First Search, Number Theory
2872. K 可整除组件的最大数量
Hard | Tree, Depth-First Search
2920. 收集所有节点硬币后的最大得分
Hard | Array, Dynamic Programming, Bit Manipulation, Tree, Depth-First Search, Memoization
2925. 对树进行操作后的最大得分
Medium | Dynamic Programming, Tree, Depth-First Search
2003. 每个子树内缺失的最小遗传值
Hard | Array, Dynamic Programming, Tree, Depth-First Search, Union-Find
2049. 统计最高分的节点数目
Medium | Array, Tree, Depth-First Search, Binary Tree