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Joined 1 year ago
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Cake day: September 14th, 2023

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  • Python

    Part1:

    matches = re.findall(r"(mul\((\d+),(\d+)\))", input)
    muls = [int(m[1]) * int(m[2]) for m in matches]
    print(sum(muls))
    

    Part2:

    instructions = list(re.findall(r"(do\(\)|don't\(\)|(mul\((\d+),(\d+)\)))", input)
    mul_enabled = True
    muls = 0
    
    for inst in instructions:
        if inst[0] == "don't()":
            mul_enabled = False
        elif inst[0] == "do()":
            mul_enabled = True
        elif mul_enabled:
            muls += int(inst[2]) * int(inst[3])
    
    print(muls)