#include <iostream>

using namespace std;

main()
{
      int a=5,b=-16;
      cout<<endl<<" a = "<<a<<" || b = "<<b;
      /*
      a=a-b;
      b=b+a;
      a=a+b;
      */
      a=b-a;
      b=b-a;
      a=b+a;
      cout<<endl<<" a = "<<a<<" || b = "<<b;
      system("PAUSE");
}