rate1 = 10.0
threshold1 = 100
discount1 = 0.1

rate2 = 11.0
threshold2 = 200
discount2 = 0.3

def compute_cost_discount(quantity, rate, threshold, discount):
    cost = rate * quantity
    if quantity>=threshold:
        cost = cost*(1.0-discount)
    return cost


customer = input('Enter customer name: ')
quantity = int(input('Enter order quantity: '))

cost1 = compute_cost_discount(quantity, rate1, threshold1, discount1)
cost2 = compute_cost_discount(quantity, rate2, threshold2, discount2)

lowest_cost = cost1

if cost2<lowest_cost:
    lowest_cost = cost2

print('Lowest Cost for', customer, ':', lowest_cost)