| 300 | Longest Increasing Subsequence | Medium | binary search |
| 307 | Range Sum Query - Mutable | Medium | tree |
| 699 | Falling Squares | Hard | tree |
| 850 | Rectangle Area II | Hard | tree |
| 1157 | Online Majority Element In Subarray | Hard | math |
| 1340 | Jump Game V | Hard | dynamic programming |
| 1626 | Best Team With No Conflicts | Medium | dynamic programming |
| 1713 | Minimum Operations to Make a Subsequence | Hard | binary search |
| 1956 | Minimum Time For K Virus Variants to Spread | Hard | geometry |
| 1964 | Find the Longest Valid Obstacle Course at Each Position | Hard | binary search |
| 2158 | Amount of New Area Painted Each Day | Hard | sort |
| 2213 | Longest Substring of One Repeating Character | Hard | string |
| 2286 | Booking Concert Tickets in Groups | Hard | design |
| 2407 | Longest Increasing Subsequence II | Hard | array |
| 2523 | Closest Prime Numbers in Range | Medium | math |
| 2569 | Handling Sum Queries After Update | Hard | array |
| 2613 | Beautiful Pairs | Hard | recursion |
| 2907 | Maximum Profitable Triplets With Increasing Prices I | Medium | binary search tree |
| 2913 | Subarrays Distinct Element Sum of Squares I | Easy | dynamic programming |
| 2916 | Subarrays Distinct Element Sum of Squares II | Easy | dynamic programming |
| 2921 | Maximum Profitable Triplets With Increasing Prices II | Hard | binary search tree |
| 2926 | Maximum Balanced Subsequence Sum | Hard | binary search tree |
| 2940 | Find Building Where Alice and Bob Can Meet | Hard | binary search |
| 3161 | Block Placement Queries | Hard | binary search tree |
| 3165 | Maximum Sum of Subsequence With Non-adjacent Elements | Hard | binary search tree |
| 3410 | Maximize Subarray Sum After Removing All Occurrences of One Element | Hard | greedy |
| 3454 | Separate Squares II | Hard | geometry |
| 3477 | Fruits Into Baskets II | Easy | binary search |
| 3479 | Fruits Into Baskets III | Medium | binary search |
| 3525 | Find X Value of Array II | Hard | dynamic programming |
| 3569 | Maximize Count of Distinct Primes After Split | Medium | array |
| 3691 | Maximum Total Subarray Value II | Hard | binary heap |
| 3719 | Longest Balanced Subarray I | Medium | array |
| 3721 | Longest Balanced Subarray II | Hard | array |