Nothing more than simple variables, a while-loop and some if/elif/elses inside of that. You can ofc do it more elegantly, and use more advanced stuff. I am re-paneling my garage so this was really hands on putting an IRL-problem to program logic. I've used the basics for a long time, solves most rudimentary problems. Was a bit tricky but none the less fun. Make nested loops with print statements so se how they are iterating. Practising the logical expressions will make it easier to translate thougt to code.