using System;

internal class Asses

{

    string s="",s2="";

    public void StringOperation(string str)

    {

        char[] c=new char[str.Length];

        if(str.Length<=1)

            {

            Console.WriteLine(str);

            }

        else

        { 

            for(int i=0;i<str.Length;i++)

            {

​

                    if(i==0 ||i==1)

                    {

                        c[i]=str[i];

                    }

                    else

                    {

                        continue;

                    }

            }

        }

        s=new String(c);

        for(int j=0;j<4;j++)

        {

            s2=s2+s;

        }

        Console.WriteLine(s2);

    }

}

public class Program

{

    public static void Main()

    {

        Asses A=new Asses();

        Asses B=new Asses();

        A.StringOperation("rahul");

        B.StringOperation("r");

    }

}