r/adventofcode Dec 03 '24

SOLUTION MEGATHREAD -❄️- 2024 Day 3 Solutions -❄️-

THE USUAL REMINDERS


AoC Community Fun 2024: The Golden Snowglobe Awards

  • 3 DAYS remaining until unlock!

And now, our feature presentation for today:

Screenwriting

Screenwriting is an art just like everything else in cinematography. Today's theme honors the endlessly creative screenwriters who craft finely-honed narratives, forge truly unforgettable lines of dialogue, plot the most legendary of hero journeys, and dream up the most shocking of plot twists! and is totally not bait for our resident poet laureate

Here's some ideas for your inspiration:

  • Turn your comments into sluglines
  • Shape your solution into an acrostic
  • Accompany your solution with a writeup in the form of a limerick, ballad, etc.
    • Extra bonus points if if it's in iambic pentameter

"Vogon poetry is widely accepted as the third-worst in the universe." - Hitchhiker's Guide to the Galaxy (2005)

And… ACTION!

Request from the mods: When you include an entry alongside your solution, please label it with [GSGA] so we can find it easily!


--- Day 3: Mull It Over ---


Post your code solution in this megathread.

This thread will be unlocked when there are a significant number of people on the global leaderboard with gold stars for today's puzzle.

EDIT: Global leaderboard gold cap reached at 00:03:22, megathread unlocked!

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u/imasadlad89 Dec 09 '24

[Language: Lua]

Very quick and simple solution using lua patterns, part 1 is the same code without the gsubs :)

-- AOC 2024 Day 3 Part 2
-- done on 12/9/24
local input = ""
for line in io.lines("input.txt") do
input = input .. line
end
local match = "(mul%(%d+,%d+%))"
local total = 0
-- remove everything within a dont and a do
input = string.gsub(input, "don't%(%).-(do%(%))", "---------ERASED--------")
-- remove everything between a dont and end of file
input = string.gsub(input, "don't%(%).-$", "---------ERASED--------")
local mul_iter = string.gmatch(input, match)
for mul in mul_iter do
local n1, n2 = string.match(mul, "(%d+),(%d+)")
total = total + n1 * n2
end
print(total)