standartPrice=100
deluxePrice=150
discountPersentage=0.1
extraCost=0

roomPreference=input("Do you want to stay in Deluxe room or Standart room: ")
nightToStay=input("How long are you planning to stay: ")


if nightToStay<3:
    totalPrice=-20

if roomPreference=="Standart":
    totalPrice+=standartPrice*nightToStay

elif roomPreference=="Deluxe":
    totalPrice=deluxePrice*nightToStay

if nightToStay<5:
    totalPrice*=(1-discountPersentage)

print(f"Your total bill is: {totalPrice}")