I’m on a roll! Day 1 was painful; in day 2 I did some improvements, and now day 3 was also solved in less than 2 hours!

I’m getting more familiar with Clojure, and the tools I use for this project: Leiningen, Emacs + CIDER. About the latter, I know I could be more efficient if I knew the commands better, but so far it is really useful and I’m not only learning tons but also in awe as to how well integrated this tool is.