using System;

public class Program

{

    private int k=10;

    public static void Main()

    {

        int i=20;

        int j=30;

        Program p=new Program();

        Console.WriteLine(i+"  "+j+"  "+p.k);

        Method1(i,j,p);

        Console.WriteLine(i+"  "+j+"  "+p.k);

        Method2(ref i,ref j,ref p);

        Console.WriteLine(i+"  "+j+"  "+p.k);

    }

    public static void Method1(int i,int j,Program p)

    {

        j+=10;

        i+=10;

        p=new Program();

        p.k+=10;

    }

    public static void Method2(ref int i,ref int j,ref Program p)

    {

        j+=10;

        i+=10;

        p=new Program();

        p.k+=10;

    }

}