#include 
#include 
using namespace std;
class Point {
private:
    int x, y;
public:
    Point(int _x, int _y) {
        x = _x;
        y = _y;
    }
    void print() {
        cout << x << " " << y << endl;
    }
    Point& operator += (Point p) {
        x += p.x;
        y += p.y;
        return *this;
    }
};
int main(){
    Point p1(1, 2);
    Point p2(1, 3);
    
    p1 += p2;
    
    p1.print();
    return 0;
}