(size12: int, size1: int, size2: int, k12: int, k1: int, k2: int)
return size12 - size1 - size2
The default heuristic cost, corresponding to the total reduction in
    memory of performing a contraction.
The default heuristic cost, corresponding to the total reduction in
    memory of performing a contraction.
The default heuristic cost corresponding to the total reduction in memory of performing a contraction .
def cost_memory_removed(size12: int, size1: int, size2: int, k12: int, k1: int, k2: int) -> float:
    """The default heuristic cost, corresponding to the total reduction in
    memory of performing a contraction.
    """
    return size12 - size1 - size2
def cost_memory_removed ( size12 : int , size1 : int , size2 : int , k12 : int , k1 : int , k2 : int ) -> float : return size12 - size1 - size2