3590. 第K小路径异或和
Hard | Array, Tree, Depth-First Search, Ordered Set
Tree
3593. 最少增量使叶子路径相等
Medium | Array, Dynamic Programming, Tree, Depth-First Search
3715. 完全平方祖先节点的和
Hard | Array, Hash Table, Math, Tree, Depth-First Search, Counting, Number Theory
3772. 树中子图的最大分数
Hard | Array, Dynamic Programming, Tree, Depth-First Search
3786. 树形分组的交互成本总和
Hard | Array, Tree, Depth-First Search
3812. 树上最小边翻转次数
Hard | Tree, Depth-First Search, Graph Theory, Topological Sort, Sorting
3820. 树中勾股距离节点
Medium | Tree, Breadth-First Search
2973. 在树节点中放置硬币的数量
Hard | Dynamic Programming, Tree, Depth-First Search, Sorting, Heap (Priority Queue)
3067. 加权树网络中可连接服务器对的数量
Medium | Array, Tree, Depth-First Search
3068. 找到节点值的最大和
Hard | Array, Dynamic Programming, Greedy, Bit Manipulation, Tree, Sorting