using System;

public class Program

{

    public static void Main()

    {

        var rnd = new Random().Next(0,5);

        switch(rnd)

        {

            case 0:

                Console.WriteLine("0");

            break;

            case 1:

            case 2:

                Console.WriteLine("1 or 2");

                break;

            case 3:

                Console.WriteLine("3");

            case 4:

                Console.WriteLine("4");

            break;

        }

    }

}