def logged_operation(value, operation):
    calc = Calculator()
    match operation:
        case "double":
            return {"result": calc.double(value), "logged": calc.logged}
        case "square":
            return {"result": calc.square(value), "logged": calc.logged}
        case _:
            return "ERROR"

class LogMixin():
    
    def __init__(self):
        self.logged = True

class Base():
    pass

class Calculator(LogMixin, Base):
    def double(self, n: int) -> int:
        return n*2
    
    def square(self, n: int) -> int:
        return n*n

    pass