| 1439 | Find the Kth Smallest Sum of a Matrix With Sorted Rows | Hard |
| 1444 | Number of Ways of Cutting a Pizza | Hard |
| 1449 | Form Largest Integer With Digits That Add up to Target | Hard |
| 1453 | Maximum Number of Darts Inside of a Circular Dartboard | Hard |
| 1458 | Max Dot Product of Two Subsequences | Hard |
| 1463 | Cherry Pickup II | Hard |
| 1467 | Probability of a Two Boxes Having The Same Number of Distinct Balls | Hard |
| 1473 | Paint House III | Hard |
| 1478 | Allocate Mailboxes | Hard |
| 1483 | Kth Ancestor of a Tree Node | Hard |
| 1489 | Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree | Hard |
| 1494 | Parallel Courses II | Hard |
| 1499 | Max Value of Equation | Hard |
| 1505 | Minimum Possible Integer After at Most K Adjacent Swaps On Digits | Hard |
| 1510 | Stone Game IV | Hard |
| 1515 | Best Position for a Service Centre | Hard |
| 1520 | Maximum Number of Non-Overlapping Substrings | Hard |
| 1521 | Find a Value of a Mysterious Function Closest to Target | Hard |
| 1526 | Minimum Number of Increments on Subarrays to Form a Target Array | Hard |
| 1531 | String Compression II | Hard |
| 1537 | Get the Maximum Score | Hard |
| 1542 | Find Longest Awesome Substring | Hard |
| 1547 | Minimum Cost to Cut a Stick | Hard |
| 1553 | Minimum Number of Days to Eat N Oranges | Hard |
| 1563 | Stone Game V | Hard |
| 1568 | Minimum Number of Days to Disconnect Island | Hard |
| 1569 | Number of Ways to Reorder Array to Get Same BST | Hard |
| 1575 | Count All Possible Routes | Hard |
| 1579 | Remove Max Number of Edges to Keep Graph Fully Traversable | Hard |
| 1585 | Check If String Is Transformable With Substring Sort Operations | Hard |