| 411. Minimum Unique Word Abbreviation | | | Solve | Hard | | |
| 465. Optimal Account Balancing | | | Solve | Hard | | |
| 691. Stickers to Spell Word | | | Solve | Hard | | |
| 782. Transform to Chessboard | | | Solve | Hard | | |
| 805. Split Array With Same Average | | | Solve | Hard | | |
| 810. Chalkboard XOR Game | | | Solve | Hard | | |
| 847. Shortest Path Visiting All Nodes | | | Solve | Hard | | |
| 864. Shortest Path to Get All Keys | | | Solve | Hard | | |
| 943. Find the Shortest Superstring | | | Solve | Hard | - | |
| 980. Unique Paths III | | | Solve | Hard | | |
| 982. Triples with Bitwise AND Equal To Zero | | | Solve | Hard | | |
| 995. Minimum Number of K Consecutive Bit Flips | | | Solve | Hard | | |
| 996. Number of Squareful Arrays | | | Solve | Hard | | |
| 1125. Smallest Sufficient Team | | | Solve | Hard | | |
| 1178. Number of Valid Words for Each Puzzle | | | Solve | Hard | | |
| 1255. Maximum Score Words Formed by Letters | | | Solve | Hard | | |
| 1284. Minimum Number of Flips to Convert Binary Matrix to Zero Matrix | | | Solve | Hard | | |
| 1349. Maximum Students Taking Exam | | | Solve | Hard | | |
| 1434. Number of Ways to Wear Different Hats to Each Other | | | Solve | Hard | | |
| 1494. Parallel Courses II | | | Solve | Hard | | |
| 1521. Find a Value of a Mysterious Function Closest to Target | | | Solve | Hard | | |
| 1542. Find Longest Awesome Substring | | | Solve | Hard | | |
| 1595. Minimum Cost to Connect Two Groups of Points | | | Solve | Hard | | |
| 1601. Maximum Number of Achievable Transfer Requests | | | Solve | Hard | | |
| 1611. Minimum One Bit Operations to Make Integers Zero | | | Solve | Hard | | |
| 1617. Count Subtrees With Max Distance Between Cities | | | Solve | Hard | | |
| 1655. Distribute Repeating Integers | | | Solve | Hard | | |
| 1659. Maximize Grid Happiness | | | Solve | Hard | | |
| 1681. Minimum Incompatibility | | | Solve | Hard | | |
| 1707. Maximum XOR With an Element From Array | | | Solve | Hard | | |
| 1723. Find Minimum Time to Finish All Jobs | | | Solve | Hard | | |
| 1755. Closest Subsequence Sum | | | Solve | Hard | | |
| 1787. Make the XOR of All Segments Equal to Zero | | | Solve | Hard | | |
| 1799. Maximize Score After N Operations | | | Solve | Hard | | |
| 1803. Count Pairs With XOR in a Range | | | Solve | Hard | | |
| 1815. Maximum Number of Groups Getting Fresh Donuts | | | Solve | Hard | | |
| 1835. Find XOR Sum of All Pairs Bitwise AND | | | Solve | Hard | | |
| 1879. Minimum XOR Sum of Two Arrays | | | Solve | Hard | | |
| 1938. Maximum Genetic Difference Query | | | Solve | Hard | | |
| 1994. The Number of Good Subsets | | | Solve | Hard | | |
| 2035. Partition Array Into Two Arrays to Minimize Sum Difference | | | Solve | Hard | | |
| 2151. Maximum Good People Based on Statements | | | Solve | Hard | | |
| 2157. Groups of Strings | | | Solve | Hard | | |
| 2172. Maximum AND Sum of Array | | | Solve | Hard | | |
| 2247. Maximum Cost of Trip With K Highways | | | Solve | Hard | - | |
| 2306. Naming a Company | | | Solve | Hard | - | |
| 2322. Minimum Score After Removals on a Tree | | | Solve | Hard | | |
| 2354. Number of Excellent Pairs | | | Solve | Hard | | |
| 2403. Minimum Time to Kill All Monsters | | | Solve | Hard | | |
| 2732. Find a Good Subset of the Matrix | | | Solve | Hard | - | |
