It's day 3, and we've gone from code interpreters to spatial mapping.
Looks like someone wasn't very organized when doing the wiring for our fuel management system! While we have the time, let's get in there and untangle the shorting out wires and replace it with its more ideal version.
Part 1 was fairly straightforward, but since I didn't know how to convert this into nice intersecting systems of equation, my brute force solution ran into a heapspace problem.
Part 2 was a bit hairy, because I had to back out one of my optimizations for part 1, which revealed (eventually) an issue with how I was calculating the points it passed through.
Overall I would rate this a fairly difficult day 3!
120635-5c140b9a- provided by Linda Thompson
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