| 1463. Cherry Pickup II | | | Solve | Hard | | |
| 1467. Probability of a Two Boxes Having The Same Number of Distinct Balls | | | Solve | Hard | - | |
| 1473. Paint House III | | | Solve | Hard | | |
| 1478. Allocate Mailboxes | | | Solve | Hard | | |
| 1479. Sales by Day of the Week | | | Solve | Hard | | |
| 1483. Kth Ancestor of a Tree Node | | | Solve | Hard | | |
| 1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree | | | Solve | Hard | | |
| 1494. Parallel Courses II | | | Solve | Hard | | |
| 1499. Max Value of Equation | | | Solve | Hard | | |
| 1505. Minimum Possible Integer After at Most K Adjacent Swaps On Digits | | | Solve | Hard | - | |
| 1510. Stone Game IV | | | Solve | Hard | | |
| 1515. Best Position for a Service Centre | | | Solve | Hard | | |
| 1516. Move Sub-Tree of N-Ary Tree | | | Solve | Hard | | |
| 1520. Maximum Number of Non-Overlapping Substrings | | | Solve | Hard | | |
| 1521. Find a Value of a Mysterious Function Closest to Target | | | Solve | Hard | | |
| 1526. Minimum Number of Increments on Subarrays to Form a Target Array | | | Solve | Hard | | |
| 1531. String Compression II | | | Solve | Hard | | |
| 1537. Get the Maximum Score | | | Solve | Hard | | |
| 1542. Find Longest Awesome Substring | | | Solve | Hard | | |
| 1547. Minimum Cost to Cut a Stick | | | Solve | Hard | | |
| 1548. The Most Similar Path in a Graph | | | Solve | Hard | | |
| 1553. Minimum Number of Days to Eat N Oranges | | | Solve | Hard | | |
| 1563. Stone Game V | | | Solve | Hard | | |
| 1568. Minimum Number of Days to Disconnect Island | | | Solve | Hard | | |
| 1569. Number of Ways to Reorder Array to Get Same BST | | | Solve | Hard | | |
| 1575. Count All Possible Routes | | | Solve | Hard | | |
| 1579. Remove Max Number of Edges to Keep Graph Fully Traversable | | | Solve | Hard | | |
| 1585. Check If String Is Transformable With Substring Sort Operations | | | Solve | Hard | | |
| 1591. Strange Printer II | | | Solve | Hard | | |
| 1595. Minimum Cost to Connect Two Groups of Points | | | Solve | Hard | | |
| 1597. Build Binary Expression Tree From Infix Expression | | | Solve | Hard | | |
| 1601. Maximum Number of Achievable Transfer Requests | | | Solve | Hard | | |
| 1606. Find Servers That Handled Most Number of Requests | | | Solve | Hard | | |
| 1610. Maximum Number of Visible Points | | | Solve | Hard | | |
| 1611. Minimum One Bit Operations to Make Integers Zero | | | Solve | Hard | | |
| 1617. Count Subtrees With Max Distance Between Cities | | | Solve | Hard | | |
| 1622. Fancy Sequence | | | Solve | Hard | | |
| 1627. Graph Connectivity With Threshold | | | Solve | Hard | | |
| 1632. Rank Transform of a Matrix | | | Solve | Hard | | |
| 1635. Hopper Company Queries I | | | Solve | Hard | | |
| 1639. Number of Ways to Form a Target String Given a Dictionary | | | Solve | Hard | | |
| 1643. Kth Smallest Instructions | | | Solve | Hard | | |
| 1645. Hopper Company Queries II | | | Solve | Hard | | |
| 1649. Create Sorted Array through Instructions | | | Solve | Hard | | |
| 1651. Hopper Company Queries III | | | Solve | Hard | | |
| 1655. Distribute Repeating Integers | | | Solve | Hard | | |
| 1659. Maximize Grid Happiness | | | Solve | Hard | | |
| 1665. Minimum Initial Energy to Finish Tasks | | | Solve | Hard | | |
| 1671. Minimum Number of Removals to Make Mountain Array | | | Solve | Hard | | |
| 1675. Minimize Deviation in Array | | | Solve | Hard | | |
