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Articles tagged with #advent-of-code
Tetris, but make it elves. Today was all about figuring out whether oddly shaped presents could tile a given rectangle without overlaps. On paper it sounds like a straight polyomino packing question; in practice it turned into a tour through three di...
Today’s problem looked like a straight "count the wire paths" exercise, but the density of the wiring diagram quickly turned it into a combinatorics workout. I ended up treating the factory like a directed acyclic graph of devices and tallying every ...
Today’s puzzle felt like fixing two halves of the same machine: first we snap indicator lights into place with toggles, then we flip a lever and treat those same buttons like little add-one circuits. Two different algebra problems, one pile of schema...
North Pole interior decorators handed me a loop of red tiles laid out on a huge floor. Part 1 wanted the largest axis-aligned rectangle that uses any two red tiles as opposite corners. Part 2 limited the rectangle to stay entirely inside the red/gree...
We find ourselves in a teleporter lab trying to fix a tachyon manifold. The puzzle input is a 2D grid representing the manifold. A tachyon beam starts at S and moves downwards. Empty space (.) allows the beam to continue straight down. However, split...
Day 8 was basically a geometric Kruskal party. Every junction box is a point in 3D space, and connecting two points merges their electrical circuits. Part 1 stops after the 1000 closest connections; Part 2 runs until everything is fused into one mega...