import java.util.*;
public class rect
{
    float area(float l, float b)
    {
        float a=l*b;
        return a;
    }
    float peri(float l,float b)
    {
        float t = 2*(l+b);
        return t;
    }
    public static void main(String[]args)
    {
        Scanner sc = new Scanner(System.in);
        double l,b;
        l = sc.nextDouble();
        b = sc.nextDouble();
        if(l<=0 || b<=0)
        {
            System.out.println("Invalid input");
            return;
        }
        rect r1 = new rect();
        System.out.println(r1.area(l,b));
        System.out.println(r1.peri(l,b));
    }
}