#include <iostream>
#include <vector>
#include <stack>
#include <fstream>
#include <algorithm>

using namespace std;

class Point {
private:
    int x;
    int y;
public:
    Point(int x = 0, int y = 0) {
        (*this).x = x; // this->x = x; isto e
        (*this).y = y; // this->y = y; isto e
    }
    void output(int x = 10, int y = 10) {
        cout << x << " " << y << endl;
    }
};
int main()
{
    Point p;
    p.output();

    return 0;
}