#include <iostream>
#include <cmath>

using namespace std;

class Point {
  private:
    double x, y;

  public:
    Point(double a, double b);
    void print(void) const;
    void translate(double dx, double dy);
    double distance(const Point & a) const;
};


class NamedPoint:public Point {
  private:
    string name;

  public:
    NamedPoint(double a, double b, string s);
    void print(void) const;
};

/**********************************************************/

void newline(void)
{
    cout << "\n";
}

int main()
{
    Point x(0.0, 0.0);
    NamedPoint y(1.0, 1.0, "y");

    y.print();
    newline();
    y.Point::print();
    newline();

    x.translate(2.0, 3.0);
    x.print();
    newline();

    y.translate(2.0, 3.0);
    y.print();
    newline();

    return 0;
}