#include <iostream>

 #include <string.h>

 #include <unistd.h>

 using namespace std;

 class Point {

 private:

     int x;

     int y;

 public:

     Point() {}

     Point(int x, int y) : x(x), y(y) {}

     void printInfo()

     {

         cout<<"("<<x<<", "<<y<<")"<<endl;

     }

     friend Point operator+(Point &p1, Point &p2);

 };

 Point operator+(Point &p1, Point &p2)

 {

     cout<<"Point operator+(Point &p1, Point &p2)"<<endl;

     Point n;

     n.x = p1.x+p2.x;

     n.y = p1.y+p2.y;

     return n;

 }

 int main(int argc, char **argv)

 {

     Point p1(, );

     Point p2(, );

     Point sum = p1+p2;

     sum.printInfo();

     return ;

 }