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#include <bits/stdc++.h>
using namespace std;

// T
class Rectangle {
public:
  Rectangle(int length, int width) : length_(length), width_(width) {}

  virtual int GetPerimeter() {
    return 2 * (length_ + width_);
  }

  virtual int GetArea() {
    return length_ * width_;
  }

private:
  int length_, width_;
};

// S
class Square : public Rectangle {
public:
  Square(int length) : Rectangle(length, length) {}
};

// Code using T
pair<int,int> GetRectangleInformation(Rectangle &rectangle) {
  return {rectangle.GetArea(), rectangle.GetPerimeter()};
}

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0); cout.tie(0);

  Rectangle rectangle(4, 2);
  auto it = GetRectangleInformation(rectangle);
  cout << it.first << " " << it.second << endl;

  Square square(5);
  it = GetRectangleInformation(square);
  cout << it.first << " " << it.second << endl;

  return 0;
}