advent of code day 12
welp, i lost a looot of time to not carefully reading the directions
pathfinding is easy enough! but i didn't realize something with a drop more than 1 was a valid move, so the hill was completely unapproachable until i realized
part 2 took like, 10 minutes after i got 1 though!
https://gist.github.com/Archenoth/19bf137701063d6b0bd42358e92d7125#day-12-hill-climbing-algorithm