import java.util.*;
import java.text.DecimalFormat;

public class Exercise109{
  public static void main (String[] args){

    Scanner sc = new Scanner(System.in);

    DecimalFormat df = new DecimalFormat("#.##########");

    double p = sc.nextDouble();
    double c = sc.nextDouble();

    double sumP = Math.pow(41, p);
    double sumC = Math.pow(49, c);

    System.out.println(df.format(sumP * sumC / Math.pow(6, p + c)));
  }
}