Advent Of Code

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Advent of Code is an annual Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.

AoC 2024

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🍷 - 2024 DAY 3 SOLUTIONS -🍷 (programming.dev)

submitted 3 weeks ago* (last edited 3 weeks ago) by [email protected] to c/[email protected]

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Day 3: Mull It Over

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[–] [email protected] 2 points 3 weeks ago (2 children)

Python

def process(input, part2=False):
    if part2:
        input = re.sub(r'don\'t\(\).+?do\(\)', '', input) # remove everything between don't() and do()
    total = [ int(i[0]) * int(i[1]) for i in re.findall(r'mul\((\d+),(\d+)\)', input) ]
    return sum(total)

Given the structure of the input file, we just have to ignore everything between don't() and do(), so remove those from the instructions before processing.

[–] [email protected] 2 points 3 weeks ago (1 children)

Sub was my first instinct too, but I got a bad answer and saw that my input had unbalanced do/don't.

[–] [email protected] 2 points 3 weeks ago

I did wonder if that might be the case, I must have been lucky with my input.