Mind palace

03-08

1522. Diameter of N-Ary Tree

02-17

226. Invert Binary Tree

02-10

1120. Maximum Average Subtree

02-05

590. N-ary Tree Postorder Traversal

02-05

589. N-ary Tree Preorder Traversal

01-25

666. Path Sum IV

01-20

104. Maximum Depth of Binary Tree

01-20

101. Symmetric Tree

01-19

111. Minimum Depth of Binary Tree

01-19

210. Course Schedule II