#include <iostream>
#include <chrono>

using namespace std;

class Square
{
protected:
    int length;
    int width;
    int line;
public:
    Square(int a)
    {
        length = a;
        width = a;
        line = 0;
    }
    void draw()
    {
        for(int i = 0; i < width; i++)
        {
            drawline();
        }
        cout << endl;
    }

    void drawline()
    {
        for(int i = 0; i < length; i++)
        {
            cout << "*";
        }
        cout << endl;
    }
};

class Triangle : public Square
{
public:
    Triangle(int a) : Square(a)
    {
        length = a;
        line = a;
    }
    void draw()
    {
        for(int i = 0; i < line; i++)
        {
            drawline();
            length -= 1;
        }
        cout << endl;
    }
};

class Rectangle : public Square
{
public:
    Rectangle(int a, int b) : Square(a)
    {
        length = a;
        width = b;
    }
    void draw()
    {
        for(int i = 0; i < width; i++)
        {
            drawline();
        }
        cout << endl;
    }
};

int main()
{
    Square A(5);
    Triangle B(4);
    Rectangle C(4,7);

    A.draw();
    B.draw();
    C.draw();
}