Advent of code 2023

At some point, this repository will probably contain the solution to the Advent of Code 2023.

Downloading input and sample files

I added automatic fetching of the full input as well as the samples (see Fetch.hs). For example,

cabal run fetch 1    # Fetch full input of day one.
cabal run fetch 1 1  # Fetch sample one of day one.

Day 1: Part two was quite hard for a day 1 puzzle.
Day 2: Writing the parser was a lot of fun!
Day 3: A grid puzzle on day three — that’s a bit unexpected.
Day 6: I loved this puzzle as it contained elements of physics.
Day 12: Part 2 required memoization which is tedious in Haskell…
Day 19: I really enjoyed this puzzle. Parsing the input, cutting the hyper-cubes; everything feels so smooth in Haskell.