total_price_without_taxes = 0

while True:
    command = input()
    if command == "special" or command == "regular":
        break
    current_price = float(command)
    if current_price < 0:
        print("Invalid price!")
    else:
        total_price_without_taxes += current_price
taxes = total_price_without_taxes * 0.2
final_price = total_price_without_taxes + taxes

special_final_price = (total_price_without_taxes + taxes) * 0.9

if total_price_without_taxes == 0:
    print("Invalid order!")
else:
    if command == "regular":
        print("Congratulations you've just bought a new computer!")
        print(f"Price without taxes: {total_price_without_taxes:.2f}$")
        print(f"Taxes: {taxes:.2f}$")
        print("-----------")
        print(f"Total price: {final_price:.2f}$")
    else:
        print("Congratulations you've just bought a new computer!")
        print(f"Price without taxes: {total_price_without_taxes:.2f}$")
        print(f"Taxes: {taxes:.2f}$")
        print("-----------")
        print(f"Total price: {special_final_price:.2f}$")