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HeyMoon hey/moon :marseyfoxgloveyourself: touch foxglove NOW :!marseyfoxgloveyourself:  2yr ago (text post) 582 thread views #130479

ADVENT OF CODE DAY 11: MONKEY BUSINESS :marseymonke:

Those FRICKING monkeys stole your stuff! Get it back! :soycry: :!marseymonke:

(Also, remember to leave a comment if you did something interesting :marseylove:)

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    monkeys = []
    @dataclass
    class Monkey:
        items : List[int] = dataclass_field(default_factory=list)
        operation = None
        test = 0
        test_true = 0
        test_false= 0
        inspected = 0

    def consume(s, prefix):
        assert s.startswith(prefix)
        return s[len(prefix):]

    for s in data:
        op, args = s.split(':')
        # print(f'{op!r}: {args!r}')
        if op.startswith('Monkey'):
            assert not args
            _, arg = op.split()
            assert int(arg) == len(monkeys)
            monke = Monkey()
            monkeys.append(monke)
        elif op == 'Starting items':
            monke.items = [int(s.strip()) for s in args.split(',')]
        elif op == 'Operation':
            args = consume(args, ' new = old ')
            op = args[0]
            assert op in '*+'
            arg = args[1:].strip()
            if arg != 'old':
                arg = int(arg)
            if op == '+':
                monke.operation = lambda x, arg=arg: x + (x if arg == 'old' else arg)
            else:
                monke.operation = lambda x, arg=arg: x * (x if arg == 'old' else arg)
        elif op == 'Test':
            args = consume(args, ' divisible by ')
            monke.test = int(args)
        elif op == 'If true':
            args = consume(args, ' throw to monkey ')
            monke.test_true = int(args)
        elif op == 'If false':
            args = consume(args, ' throw to monkey ')
            monke.test_false = int(args)
        else:
            assert False

    # pprint(monkeys)

    modulo = functools.reduce(operator.mul, [m.test for m in monkeys], 1)

    for round in range(10_000 if second else 20):
        for i, m in enumerate(monkeys):
            # print(f'Monke {i}')
            items = m.items
            m.items = []
            for it in items:
                m.inspected += 1
                # print(f'inspect {it}')
                it = m.operation(it)
                # print(f'worry to {it}')
                if not second:
                    it //= 3
                it %= modulo
                # print(f'worry to {it}')
                target = m.test_false if it % m.test else m.test_true
                # print(f'target {target}')
                monkeys[target].items.append(it)
        # pprint(monkeys)

    top = [-m.inspected for m in monkeys]
    heapify(top)
    a, b = heappop(top), heappop(top)
    return a * b
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 top = [-m.inspected for m in monkeys]
     heapify(top)
     a, b = heappop(top), heappop(top)
     return a * b

@JollyMoon look at this shit, me being O(n) instead of sorting the whole array!

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heap creation is O(n logn) tho

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Are you feeling okay bud?

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