Advent of Code 2019 day 21
Solving by inspection
Recent posts
Advent of Code 2019 day 20
More graph contraction, and back to typeclasses
Advent of Code 2019 day 19
There are only two hard things in computer science...
Advent of Code 2019 day 18
Preprocessing and branching factors.
Advent of Code 2019 day 17
Stumbling in the dark, then greedy compression.
A first step into optics
Dipping my toes into a new technique.