* To work on advent-of-code problems, go to [[https://adventofcode.com]] and create an account. You will need to do this to receive the puzzle input individually for you. Later, you will be able to upload your answers and get it checked for correctness.
* Add an `AUTHOR` environment variable and set it as your name/username. (On Gitpod, you can do this in account settings.):
* By convention, the `MAIN:` function solves the exact task given, while the core function solves the core problem (no input parsing, no output formatting). Sometimes it solves a more generalized problem; sometimes it solves only a specific subset of the problem (which happens in AoC problems, when an input exploit is needed).
*`dayN-tests.factor` should contain the test cases for the puzzle. It may be a good idea to start with the model problem and solution for that day. Later, you can incorporate your personal dataset, which is kept in `datasets/aoc2020/dayN.txt`.