using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Въведи y = ");

        var x = double.Parse(Console.ReadLine());

        double y;

        if (x<1) 

        {

        Console.Write("x=");

        Console.WriteLine(y=3*x);

        }

        else 

        {Console.Write("x=");

         Console.WriteLine(y=3*x-3);

        }

    }

}