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First, the challenge: adventofcode.com/2024/day/2 TL;DR: a bunch of numbers in text. Every line of numbers is a "record". How many records are ordered with elements differ only by 1, 2, or 3? A record is also fine if it satisfies these rules without one of its elements. 😱

Let's break this scary (no so!) query apart. First, split the incoming string into an array of strings/lines and convert it into a set:

Then we want to just parse the records into arrays of integers -- so much easier to work with!