The focus is canonically correct answers; making the correct datastructure in c to solve the problem as opposed to hacking my way through. (Until things get to complex then I'll revert to hacking 😅).

I am leaning on some things I've built (for reading in a file), which are in the includes folder. This needs to be built first so the solutions can link against it.

cd ./includes && make

Each day is split into pt1 & pt2 with a Makefile meaning you should be able to run make in the folder, run the executable and it should just work™️.