import java.lang.*;

class Demo
{
    public int i;
    public int j;

    public Demo()
    {
        this.i=0;
        this.j=0;
    }

    public Demo(int x,int y)
    {
        this.i=x;
        this.j=y;
    }


    public void fun()
    {
        System.out.println("Inside fun");
    }

    public void gun()
    {
        System.out.println("Inside gun");
    }


}
class Marvellous
{
    public static void main(String arr[])
    {
        System.out.println("Inside main");
        Demo  obj=new Demo();
        obj.fun();
        obj.gun();
        System.out.println(obj.i);
      
        Demo  objx=new Demo(11,21);
        objx.fun();
        objx.gun();
        System.out.println(objx.i);
      
    }
}