def calculate_electric_bill(kilowat): bill = 0 if kilowat <= 50: bill = 1230 * kilowat elif kilowat <= 100: bill = 1230 * 50 + 1530 * (kilowat - 50) else: bill = 1230 * 50 + 1530 * 50 + 1786 * (kilowat - 100) return bill def main(): print('Vui long nhap vao kilowat dien:') kilowat = input('Kilowat:') #electric_bill = calculate_electric_bill(kilowat) print('So tien phai tra : %d' % kilowat) main()