import java.util.Scanner;
class PersegiPanjang
{
public static void main (String[] args)
{
Scanner scanner = new Scanner(System.in);
System.out.println("Panjang :");
double panjang = scanner.nextDouble();
System.out.println("Lebar :");
double lebar = scanner.nextDouble();
double luas = panjang*lebar;
System.out.println("Luas dari persegi panjang : " + luas);
}
}