import java.util.*;
public class Main
{
    public static void main(String args [])
    {
        Scanner sc =new Scanner (System.in);
        System.out.println();
        double l=sc.nextFloat();
        double w=sc.nextFloat();
        if(l<=0 || w<=0)
        {
            System.out.println("Invalid input");
        }
        float a=l*w;
        float b=2*(l+w);
        System.out.printf("%.1f",a);
        System.out.println();
        System.out.printf("%.1f",b);
    }
}