# https://www.codewars.com/kata/568d0dd208ee69389d000016
#
# After a hard quarter in the office you decide to get some rest on a vacation.
# So you will book a flight for you and your girlfriend and try to leave all
# the mess behind you.
#
# You will need a rental car in order for you to get around in your vacation.
# The manager of the car rental makes you some good offers.
#
# Every day you rent the car costs $40. If you rent the car for 7 or more days,
# you get $50 off your total. Alternatively, if you rent the car for 3 or more
# days, you get $20 off your total.
#
# Write a code that gives out the total amount for different days(d).


def rental_car_cost(d):
    corr = 0

    if d >= 3:
        corr = 20
    if d >= 7:
        corr = 50

    return d*40-corr
