using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter 1st number");

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

        Console.WriteLine("Enter 2nd number");

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

        Console.WriteLine("Before swapping {0} and {1}",a,b);

        int temp=a;

        a=b;

        b=temp;

        Console.WriteLine("After swapping {0} and {1}",a,b);

    }

}