Implement abstract class Shape.

Implement classes Rectangle, Triangle that extend Shape.

Implement class Square that extends Rectangle.

abstract class Shape
{
  int a, b;
  Shape(int a, int b) // Constructor
  abstract int Perimeter(); // Perimeter
  abstract double Area(); // Area
}

class Rectangle extends Shape
{
  Rectangle(int a, int b) // Constructor
  public int Perimeter() // Perimeter of Rectangle
  public double Area() // Area of Rectangle
}

class Square extends Rectangle
{
  Square(int a) // Constructor
}

class Triangle extends Shape
{
  int c;
  Triangle (int a, int b, int c) // Constructor
  public int Perimeter() // Perimeter of Triangle
  public double Area() // Area of Triangle
}

Input

Each line contains one of three types of figures in the next format:

• Square a
• Rectangle a b
• Triangle a b c

Output

For each figure print in a separate line its perimeter and area.