Polygon Area Calculator

class Rectangle:
    def __init__(self, width, height):
        self.width = width
        self.height = height
    
    def set_width(self, width):
        self.width = width
    
    def set_height(self, height):
        self.height = height
    
    def get_area(self):
        return self.width * self.height
    
    def get_perimeter(self):
        return 2 * (self.width + self.height)
    
    def get_diagonal(self):
        return (self.width**2 + self.height**2)**0.5
    
    def get_picture(self):
        if self.width > 50 or self.height > 50:
            return "Too big for picture."
        picture = ""
        for _ in range(self.height):
            picture += '*' * self.width + '\n'
        return picture
    
    def get_amount_inside(self, shape):
        return (self.width // shape.width) * (self.height // shape.height)
    
    def __str__(self):
        return f"Rectangle(width={self.width}, height={self.height})"


class Square(Rectangle):
    def __init__(self, side):
        super().__init__(side, side)  # A square has equal width and height
    
    def set_side(self, side):
        self.width = side
        self.height = side
    
    # Override set_width and set_height to ensure both dimensions are the same
    def set_width(self, width):
        self.set_side(width)
    
    def set_height(self, height):
        self.set_side(height)
    
    def __str__(self):
        return f"Square(side={self.width})"


# Example usage
rect = Rectangle(10, 5)
print(rect.get_area())  # 50
rect.set_height(3)
print(rect.get_perimeter())  # 26
print(rect)  # Rectangle(width=10, height=3)
print(rect.get_picture())  # Picture of rectangle

sq = Square(9)
print(sq.get_area())  # 81
sq.set_side(4)
print(sq.get_diagonal())  # 5.656854249492381
print(sq)  # Square(side=4)
print(sq.get_picture())  # Picture of square

sq.set_width(6)
print(sq)  # Square(side=6)  (after set_width)

sq.set_height(8)
print(sq)  # Square(side=8)  (after set_height)

rect.set_height(8)
rect.set_width(16)
print(rect.get_amount_inside(sq))  # 8