using System;

public class Program

{

    public static void Main()

    {

        restart:

        Console.WriteLine("Enter first no ");

        int a=int.Parse(Console.ReadLine());

        Console. WriteLine ("Enter sec no") ;

        int b=int.Parse(Console.ReadLine()) ;

        int c=a+b;

        Console. WriteLine ("add results is:"+c) ;

        Console. WriteLine ("do u want to continue \n press 'y'for continue \n press 'n'of exist ") ;

        char ch=char.Parse(Console.ReadLine()) ;

        if (ch=='y') 

        {

            goto restart;

        }

        Console. ReadLine () ;

    }

}