using System;

public class Program

{

    public static void Main()

    {

        int n1, n2, n3;

        Console.WriteLine("Enter n1 ");

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

        Console.WriteLine("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); 

    } 

}