Electricity bill

 calculate the electricity bill for household based on units of electricity

    units = int(input())

    bill = 0

    if units < 50:

        bill = 2 * units

    elif units < 150:

        bill = (2 * 50) + (3 * (units - 50))

    elif units < 250:

        bill = (2 * 50) + (3 * 100) + (5 * (units - 150))

    elif units >= 250:

        bill = (2 * 50) + (3 * 100) + (5 * 100) + (8 * (units - 250))

    surcharge = (0.2 * bill)

    total_bill = (bill + surcharge)

    print(total_bill)