--description--

Given two strings representing the time you parked your car and the time you picked it up, calculate the parking fee.

The given strings will be in the format "HH:MM" using a 24-hour clock. So "14:00" is 2pm for example.
The first string will be the time you parked your car, and the second will be the time you picked it up.
If the pickup time is earlier than the entry time, it means the parking spanned past midnight into the next day.

Fee rules:

Each hour parked costs $3.
Partial hours are rounded up to the next full hour.
If the parking spans overnight (past midnight), an additional $10 overnight fee is applied.
There is a minimum fee of $5 (only used if the total would be less than $5).

Return the total cost in the format "$cost", "$5" for example.

--hints--

calculate_parking_fee("09:00", "11:00") should return "$6".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(calculate_parking_fee("09:00", "11:00"), "$6")`)
}})

calculate_parking_fee("10:00", "10:30") should return "$5".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(calculate_parking_fee("10:00", "10:30"), "$5")`)
}})

calculate_parking_fee("08:10", "10:45") should return "$9".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(calculate_parking_fee("08:10", "10:45"), "$9")`)
}})

calculate_parking_fee("14:40", "23:10") should return "$27".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(calculate_parking_fee("14:40", "23:10"), "$27")`)
}})

calculate_parking_fee("18:15", "01:30") should return "$34".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(calculate_parking_fee("18:15", "01:30"), "$34")`)
}})

calculate_parking_fee("11:11", "11:10") should return "$82".

({test: () => { runPython(`
from unittest import TestCase
TestCase().assertEqual(calculate_parking_fee("11:11", "11:10"), "$82")`)
}})

--seed--

--seed-contents--

def calculate_parking_fee(park_time, pickup_time):

    return park_time

--solutions--

import math

def calculate_parking_fee(park_time, pickup_time):
    def to_minutes(time_str):
        hours, minutes = map(int, time_str.split(":"))
        return hours * 60 + minutes

    entry_minutes = to_minutes(park_time)
    exit_minutes = to_minutes(pickup_time)

    overnight = False

    if exit_minutes < entry_minutes:
        overnight = True
        total_minutes = (24 * 60 - entry_minutes) + exit_minutes
    else:
        total_minutes = exit_minutes - entry_minutes

    hours = math.ceil(total_minutes / 60)

    cost = hours * 3

    if overnight:
        cost += 10

    if cost < 5:
        cost = 5

    return f"${cost}"

Challenge 215: Parking Fee Calculator

--description--

--hints--

--seed--

--seed-contents--

--solutions--