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5 problems across 2 categories
| Done | Title | Difficulty | Updated |
|---|---|---|---|
| Write a quarterly SQL report and a bash max-file script Software EngineerCoding | Medium | Jan 20, 2026 | |
| Answer k-step ancestor queries in a rooted tree Software EngineerCoding | Medium | Jan 20, 2026 | |
| Return the largest file size in a directory Data ScientistCoding | Easy | Jan 17, 2026 | |
| Compute per-coin quarterly amounts and totals Data Scientist | Easy | Jan 17, 2026 | |
| Answer ancestor-walk queries on a rooted tree Data ScientistCoding | Easy | Jan 17, 2026 |