Conditional Statements Advanced - Lab / 12. Trade Commissions

city = str(input())
sales = float(input())
commision = 0

if city == "Sofia":
    if 0 <= sales <= 500:
        commision = (sales * 0.05)
    elif 500 <= sales <= 1000:
        commision = (sales * 0.07)
    elif 1000 <= sales <= 10000:
        commision = (sales * 0.08)
    elif sales > 10000:
        commision = (sales * 0.12)

elif city == "Varna":
    if 0 <= sales <= 500:
        commision = (sales * 0.045)
    elif 500 <= sales <= 1000:
        commision = (sales * 0.075)
    elif 1000 <= sales <= 10000:
        commision = (sales * 0.10)
    elif sales > 10000:
        commision = (sales * 0.13)

elif city == "Plovdiv":
    if 0 <= sales <= 500:
        commision = (sales * 0.055)
    elif 500 <= sales <= 1000:
        commision = (sales * 0.08)
    elif 1000 <= sales <= 10000:
        commision = (sales * 0.12)
    elif sales > 10000:
        commision = (sales * 0.145)

if commision == 0:
    print('error')
else:
    print(f'{commision:.2f}')