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Joined 2 years ago
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Cake day: September 14th, 2023

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  • Python part 1

    This is working for the demo, but not for the actual data. I’m a bit lost on why.

    def part1(data: data) -> None:
        disk_map, free = gen_disk_map(data.getlines()[0])
        for f in free[:-2]:
            disk_map[f] = disk_map.pop(max(disk_map.keys()))
        print(sum([k * v for k, v in disk_map.items()]))
    
    
    def gen_disk_map(raw: str):
        file_id = 0
        pos = 0
        disk_map, free = {}, []
    
        for read_index, val in enumerate(map(int, raw)):
            if read_index % 2 == 0:
                for _ in range(val):
                    disk_map[pos] = file_id
                    pos += 1
                file_id += 1
            else:
                free.extend(range(pos, pos + val))
                pos += val
    
        return disk_map, free
    





  • 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)