The solutions are meant to be ran with the program-tester.sh script (see here), which runs the program on all *.in files in the directory, and tests whether the corresponding *.ans file matches the given output. As of 2021, each program outputs both part 1 and part 2 on separate lines.
Programs are initialized with the init-day.sh script. I.e. typing init-day.sh 10 initializes the 10th day by creating a folder named 10, downloading the input test case with the session.cookie, copying the dummy.py file and opening the solution file.
- 2021: A mix of Julia, Python and APL in that order. Trying out Julia and APL for the first time.