#include <iostream>

using namespace std;

class Point {
private:
    int x, y;

public:
    Point() {

    }
    Point(int x, int y) {
        this->x = x;
        this->y = y;
    }

    Point & operator += (Point tmp) {
        this->x += tmp.x;
        this->y += tmp.y;

        return *this;
    }
    void print() {
        cout << this->x << " " << this->y << endl;
    }
};

int main() {

    Point p1(1, 2);
    Point p2(2, 3);
    p1 += p2;

    p1.print();

    return 0;
}