using System;

public class Program

{

    public static void Main()

    {

        int n1, n2, n3;

        Console.Write("Enter n1");

        n1=Int32.Parse(Console.ReadLine());

        Console.Write("Enter n2");

        n2=Int32.Parse(Console.ReadLine());

        n3=n1+n2;

        Console.WriteLine("n3={0}",n3);

        string a=Convert.ToString(n1);

        string b=Convert.ToString(n2);

        string c=a+b;

        Console.WriteLine("c={0}",c);

    }

}