Written in Kotlin.
- Day 01 (source, test)
- Day 02 (source, test)
- Day 03 (source, test)
- Day 04 (source, test)
- Day 05 (source, test)
- Day 06 (source, test)
- Day 07 (source, test)
- Day 08 (source, test)
- Day 09 (source, test)
- Day 10 (source, test)
- Day 11 (source, test)
- Day 12 (source, test)
- Day 13 (source, test)
- Day 14 (source, test)
- Day 15 (source, test)
- Day 16 (source, test)
- Day 17 (source, test)
- Day 18 (source, test)
- Day 19 (source, test)
- Day 20 (source, test)
- Day 21 (source, test)
- Day 22 (source, test)
- Day 23 (source, test)
- Day 24 (source, test)