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