import java.util.Scanner;
public class cd {

    public static void main(String[] args) {
 Scanner   scan = new Scanner(System.in);

        System.out.print("Въведи a: ");
        double a = scan.nextDouble();

        System.out.print("Въведи b: ");
        double b = scan.nextDouble();

        double perimeter = 2 * (a + b);
        double area = a * b;

        System.out.println("Периметър: " + perimeter);
        System.out.print("Лице: " + area);
    }

}