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);

    }

}