2021 puzzels: https://adventofcode.com/2021
Why my screen time after 9pm in December increases significantly (while I was in California).
2022 puzzels: https://adventofcode.com/2022
Why my screen time in December increases significantly (now I live in New England).
2023 puzzels: https://adventofcode.com/2023
I should use Mojo to write real programs!
2024 puzzels: https://adventofcode.com/2024
Remembering how to write Scala again!
2025 puzzels: https://adventofcode.com/2025
Learning Zig ...