// editor4
import java.util.*;
public class rectangle{
    public static void dimensions(float l,float w){
        if(l<=0 || w<=0){
            System.out.println("Invalid input");
            return ;
        }
         float area = l*w;
         System.out.println(area);
         float perimeter = 2*(l+w);
         System.out.println(".f\n",perimeter);
    }
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        float a = sc.nextFloat();
        float p = sc.nextFloat();
         
        dimensions(a,p);
        
}
}