import java.util.*;
class swap
{
    public static void main(String args[])
    {
      Scanner sc = new Scanner(System.in);
      int a = sc.nextInt();
      int b = sc.nextInt();
      System.out.println("Before Swapping: " + " " +"a ="  + a + " b = " + b);
      a = a+ b;
      b = a - b;
      a = a- b;
      System.out.println("a = " + a + ", b = " + b);
    }   
}