using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        int a = 1039;

        int b = 7056;

​

        int newNumber = int.Parse(a.ToString() + b.ToString());

        Console.WriteLine(newNumber);

        int newNumber1 = Convert.ToInt32(string.Format("{0}{1}", a, b));

        Console.WriteLine(newNumber1);

    }

}