#include <iostream>
#include <fstream>
#include <math.h>
#include <iomanip>

using namespace std;

class Point1
{
protected:
    int x;
public:
    Point1(int sx)
    {
        x = sx;
    }

    void Set(int sx)
    {
        x = sx;
    }

    int Get_x()
    {
        return x;
    }
};

class Point2 : public Point1
{
protected:
    int y;
public:
    Point2(int sx, int sy) : Point1(sx)
    {
        y = sy;
    }

    void Set(int sx)
    {
        Point1::Set(sx);
    }

    void Set(int sx, int sy)
    {
        Set(sx);
        y = sy;
    }

    int Get_y()
    {
        return y;
    }
};

class Point3 : public Point2
{
protected:
    int z;
public:
    Point3(int sx, int sy, int sz) : Point2(sx, sy)
    {
        z = sz;
    }

    void Set(int sx)
    {
        Point1::Set(sx);
    }

    void Set(int sx, int sy)
    {
        Point2::Set(sx, sy);
    }

    void Set(int sx, int sy, int sz)
    {
        Set(sx, sy);
        z = sz;
    }

    int Get_z()
    {
        return z;
    }
};

int main()
{
    Point3 p(1, 1, 1);
    cout << p.Get_x() << " " << p.Get_y() << " " << p.Get_z() << "\n";
    p.Set(2);
    cout << p.Get_x() << " " << p.Get_y() << " " << p.Get_z() << "\n";
    p.Set(2, 2);
    cout << p.Get_x() << " " << p.Get_y() << " " << p.Get_z() << "\n";
    p.Set(2, 2, 2);
    cout << p.Get_x() << " " << p.Get_y() << " " << p.Get_z() << "\n";
    return 0;
}