#include <iostream>
using namespace std;

#define SQUARE(a) a*a
#define INCR_xx (xx)++

#define  PI 3.142


const float PI1 = 3.142 ;

int xx = 0 ;
inline int SQUARE1( int a )
{
  return a*a ;
}


int main()
{
      int xx = 0  ;
      int y1 = SQUARE( xx + 2 )  ; //  xx + 2*xx + 2 = 2

      y1 = SQUARE1( xx + 2 ) ;
      INCR_xx ;

      cout << y1  << endl ;
      cout << xx  << endl ;
      cout << ::xx  << endl ;


}