Run a day using cabal run day[number], e.g. cabal run day3.
In .env put one line with year, and one with a session cookie, see .env.example for example.
To fetch a days description and your input use:
cabal run fetch [day]Days should save solutions in ./answer/day[number]-part[number]
To actually submit your solutions use
cabal run submit [day] [part]