Advent of Code is an amazing achievement. Designing all the puzzles, writing code to generate all those different inputs for everyone, keeping the site going, somehow managing to create this wonderful community of problem solvers... I loved it last year. I've already paid my AoC++ this year. The least I can do for a month and more (because I never do a puzzle a day, and still haven't finished last year's) of fun.

This year I need to make sure I do the graph search problems properly, because I've never learned those methods and I really should.