| 207. Course Schedule | | | Solve | Medium | | |
| 210. Course Schedule II | | | Solve | Medium | | |
| 269. Alien Dictionary | | | Solve | Hard | | |
| 310. Minimum Height Trees | | | Solve | Medium | | |
| 329. Longest Increasing Path in a Matrix | | | Solve | Hard | | |
| 444. Sequence Reconstruction | | | Solve | Medium | | |
| 631. Design Excel Sum Formula | | | Solve | Hard | | |
| 802. Find Eventual Safe States | | | Solve | Medium | | |
| 851. Loud and Rich | | | Solve | Medium | | |
| 913. Cat and Mouse | | | Solve | Hard | | |
| 1059. All Paths from Source Lead to Destination | | | Solve | Medium | | |
| 1136. Parallel Courses | | | Solve | Medium | | |
| 1203. Sort Items by Groups Respecting Dependencies | | | Solve | Hard | | |
| 1245. Tree Diameter | | | Solve | Medium | | |
| 1462. Course Schedule IV | | | Solve | Medium | | |
| 1591. Strange Printer II | | | Solve | Hard | | |
| 1632. Rank Transform of a Matrix | | | Solve | Hard | | |
| 1728. Cat and Mouse II | | | Solve | Hard | | |
| 1786. Number of Restricted Paths From First to Last Node | | | Solve | Medium | | |
| 1857. Largest Color Value in a Directed Graph | | | Solve | Hard | | |
| 1916. Count Ways to Build Rooms in an Ant Colony | | | Solve | Hard | | |
| 1976. Number of Ways to Arrive at Destination | | | Solve | Medium | | |
| 2050. Parallel Courses III | | | Solve | Hard | | |
| 2115. Find All Possible Recipes from Given Supplies | | | Solve | Medium | | |
| 2127. Maximum Employees to Be Invited to a Meeting | | | Solve | Hard | | |
| 2192. All Ancestors of a Node in a Directed Acyclic Graph | | | Solve | Medium | | |
| 2246. Longest Path With Different Adjacent Characters | | | Solve | Hard | | |
| 2328. Number of Increasing Paths in a Grid | | | Solve | Hard | | |
| 2360. Longest Cycle in a Graph | | | Solve | Hard | | |
| 2371. Minimize Maximum Value in a Grid | | | Solve | Hard | | |
| 2392. Build a Matrix With Conditions | | | Solve | Hard | | |
| 2603. Collect Coins in a Tree | | | Solve | Hard | | |
