using System;

public class Program

{

    static int QuirkySum(int x = 0, int y = 0)

   {

    return (x == y ? 3 * (x + y) : x + y);

    }

    public static void Main()

    {

        Console.WriteLine(QuirkySum(1,3));

        Console.WriteLine(QuirkySum(3,3)); 

        Console.WriteLine(QuirkySum(y:3)); 

    }

}