Advent of code is a series of coding challenges in the form of an advent calendar : One challenge divided in two parts per day until December 25th https://adventofcode.com/
Here's my shot at it during the end of my semester, we'll see how it goes.
Me doing the challenge in live (In French): https://www.youtube.com/playlist?list=PLmz4Swzo5VqCqrASzgByKEWtLZOLxq1qu