using System;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine(CalculateTotal("PREMIUM", 23, 300));

        Console.WriteLine(CalculateTotal("REGULAR", 45, 20));

        Console.WriteLine(CalculateTotal("NONE", 20, 100));

    }

    public static decimal CalculateTotal(string type, int age, decimal totalPrice)

    {

        if(type=="PREMIUM")

        {

            return (totalPrice - 10);

        }

        else if (type == "REGULAR"){

            return totalPrice;

        }

        else

        return totalPrice;

    }

}