static void Main(string[] args)
{
var input = Console.ReadLine().Split();
Season season = Enum.Parse <Season>(input[2]);
decimal finalPrice = 0;
if (input.Length == 4)
{
Discount discount = Enum.Parse <Discount>(input[3]);
finalPrice = PriceCalculator.CalculatePrice(decimal.Parse(input[0]), int.Parse(input[1]), season, discount);
}
else
{
finalPrice = PriceCalculator.CalculatePriceWithoutDiscount(decimal.Parse(input[0]), int.Parse(input[1]), season);
}
Console.WriteLine($"{finalPrice:f2}");
}