Day 17: Clumsy Crucible
Intimidating at first, so I went shopping for christmas presents first, which engaged my brain juices.
In hindsight this is is searching for the shortest path in a graph, making sure that each square is actually two nodes, for when approached vertically or horizontally. My shcool days are distant now, and i wonder how far from optimal my implementation is ^^.
Part two was only a small edit from part one for me, and the code actually ran faster! from ~45s -> ~20s.