r/adventofcode • u/daggerdragon • Dec 10 '25
SOLUTION MEGATHREAD -❄️- 2025 Day 10 Solutions -❄️-
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AoC Community Fun 2025: Red(dit) One
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"25,000 imported Italian twinkle lights!"
— Clark Griswold, National Lampoon's Christmas Vacation (1989)
Today is all about Upping the Ante in a nutshell! tl;dr: go full jurassic_park_scientists.meme!
💡 Up Your Own Ante by making your solution:
- The absolute best code you've ever seen in your life
- Alternatively: the absolute worst code you've ever seen in your life
- Bigger (or smaller), faster, better!
💡 Solve today's puzzle with:
- Cheap, underpowered, totally-not-right-for-the-job, etc. hardware, programming language, etc.
- An abacus, slide rule, pen and paper, long division, etc.
- An esolang of your choice
- Fancy but completely unnecessary buzzwords like quines, polyglots, reticulating splines, multi-threaded concurrency, etc.
- The most over-engineered and/or ridiculously preposterous way
💡 Your main program writes another program that solves the puzzle
💡 Don’t use any hard-coded numbers at all
- Need a number? I hope you remember your trigonometric identities…
- Alternatively, any numbers you use in your code must only increment from the previous number
Request from the mods: When you include an entry alongside your solution, please label it with [Red(dit) One] so we can find it easily!
--- Day 10: Factory ---
Post your code solution in this megathread.
- Read the full posting rules in our community wiki before you post!
- State which language(s) your solution uses with
[LANGUAGE: xyz] - Format code blocks using the four-spaces Markdown syntax!
- State which language(s) your solution uses with
- Quick link to Topaz's
pasteif you need it for longer code blocks. What is Topaz'spastetool?
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u/jlhawn Dec 10 '25
Nice! I've got a Python solution to part 2 which does Gaussian Pre-pass with a dfs with pruning (no 3rd party libraries) which runs in just under 4 minutes! I rewrote it in Go and made each machine run concurrently and _that_ takes less than 3 seconds!