static void Main(string[] args)
{
string[] input = Console.ReadLine().Split();
decimal pricePerDay = decimal.Parse(input[0]);
int numberOfDays = int.Parse(input[1]);
string season = input[2];
Season currentSeason = (Season)Enum.Parse(typeof(Season), season);
Discount currentDiscount = Discount.None;
if (input.Length == 4)
{
currentDiscount = (Discount)Enum.Parse(typeof(Discount), input[3]);
}
decimal totalPrice = PriceCalculator.CalculatePrice(pricePerDay,
numberOfDays,
currentSeason,
currentDiscount);
Console.WriteLine($"{totalPrice:f2}");
}