/*Gauge Smithee
Square
*/


public class MyClass {
    public static void main(String args[]) {

        Square a = new Square();
        Square b = new Square();


        a.side = 15;
        b.side = 15;

        System.out.println(a.getPerimeter());
        System.out.println(b.getPerimeter());


    }
}

class Square {
    double side;

    public double getArea() {
        return side = side;
    }

    public double getPerimeter() {
        return 4 * side;
    }

}