public static void Main()
{
var inputHolidayInfo = Console.ReadLine()
.Split(' ')
.ToArray();
var pricePerDay = decimal.Parse(inputHolidayInfo[0]);
var numbersOfDays = int.Parse(inputHolidayInfo[1]);
var season = inputHolidayInfo[2];
string discount = null;
if (inputHolidayInfo.Length == 4)
{
discount = inputHolidayInfo[3];
}
var price = new PriceCalculator(pricePerDay, numbersOfDays, season, discount);
Console.WriteLine($"{price.CalcPriceForAllHolyday():f2}");
}