Poison
- 2559. Count Vowel Strings in Ranges
- 2586. Count the Number of Vowel Strings in Range
- 2003. Smallest Missing Genetic Value in Each Subtree
- 275. H-Index II
- 274. H-Index
- 2558. Take Gifts From the Richest Pile
- 1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts
- 1206. Design Skiplist
- 2520. Count the Digits That Divide a Number
- 2698. Find the Punishment Number of an Integer