public static class PriceCalculator
{
    public static decimal CalculatePrice(decimal pricePerDay, int numberOfDays, Season season, Discount discountType)
    {
        int priceMultiplier = (int)season;
        decimal discountMultiplier = (decimal)discountType / 100;
        decimal price = pricePerDay * (decimal)numberOfDays * priceMultiplier;
        decimal discount = price * discountMultiplier;
        decimal totalPrice = price - discount;

        return totalPrice;
    }
}

public enum Season
{
    spring = 2,
    summer = 4,
    autumn = 1,
    winter = 3
}

public enum Discount
{
    none,
    secondvisit = 10,
    vip = 20
}