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wence
frankenbike
22 was a bit annoying. My first instinct was to add a negative block when there's an intersection (seemingly the fastest/simplest solution) but after I couldn't get it to work I convinced myself that splitting cubes would be easier. It was a pain.
Did not solve 23 part 2 before I had to travel home for Christmas but it was getting a solution (also Dijkstra), just giving me the wrong cost. I was hoping we'd done all the hard ones for the year so that was a nasty surprise
Today looks annoying as well