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generating technical usernames
For technical username you can use for example a prefix u + 10 random numbers. PowerShell one-liner: 'u' + -join (1..10 | ForEach-Object { Get-Random -Minimum 0 -Maximum 10 }) Output examples: u48291
Sep 10, 20261 min read
AoC25 Day 12: Christmas Tree Farm
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...
Dec 12, 20257 min read
AoC25 Day 11: Reactor Relays
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 ...
Dec 12, 20256 min read
AoC25 Day 10: Factory
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...
Dec 12, 20258 min read
AoC25 Day 9: Movie Theater
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...
Dec 9, 20258 min read
moon x code
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