I used numpy for Day 18 and that's it. Everything else is from the stdlib.
| Day | Part 1 | Part 2 |
|---|---|---|
| 01 | 2m | 1m |
| 02 | 7m | 5m |
| 03 | 4m | 4m |
| 04 | 3m | 12s |
| 05 | 8m | 37m |
| 06 | 31m | 4m |
| 07 | 44m | / |
| 08 | 30m | / |
| 09 | / | / |
| 10 | 22m | 15s |
| 11 | / | / |
| 12 | 6m | 30s |
| 13 | 15min | 30s |
| 14 | 11m | 7m |
| 15 | / | / |
| 16 | 7m | 10m |
| 17 | 9m | 1m |
| 18 | 51m | 2m |
| 19 | 19m | / |
| 20 | 19m | 11m |
| 21 | 60m | 15s |
| 22 | / | / |
| 23 | 46m | 1s |
| 24 | / | / |
| 25 | 2h | / |