Advent of Code

Advent of Code was created by Eric Wastl in 2015. Quoting from the website:

”Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. People use them as interview prep, company training, university coursework, practice problems, a speed contest, or to challenge each other.

You don’t need a computer science background to participate - just a little programming knowledge and some problem-solving skills will get you pretty far. Nor do you need a fancy computer; every problem has a solution that completes in at most 15 seconds on ten-year-old hardware.”

Every problem has two parts. According to Eric, the first one is a way to make sure that you understand the assignment, and the second one is the actual problem. The second part is normally more challenging than the first one. Each problem is accompanied by input data...