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Duolingo
0 Easy3 Medium2 Hard5 total
| No. | Problem | Difficulty | Frequency |
|---|---|---|---|
| 2227 | Encrypt and Decrypt Strings | Hard | |
| 2090 | K Radius Subarray Averages | Medium | |
| 1733 | Minimum Number of People to Teach | Medium | |
| 329 | Longest Increasing Path in a Matrix | Hard | |
| 2365 | Task Scheduler II | Medium |