Xây dựng một dự báo thay thế

def ____(____, ____, ____):
    res = []
    for sales in sales_usd:
        if sales >= 350:
            sales_dep = (350 * base_sales_price) + ((sales - 350) * (base_sales_price - 1))
        else:
            sales_dep = sales * base_sales_price
        if sales >= 500:
            cost_dep = (500 * base_cost_price) + ((sales - 500) * (base_cost_price + 2))
        else:
            cost_dep = sales * base_cost_price
        res.append(sales_dep - cost_dep)
    return ____