import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int P = scan.nextInt();
		int C = scan.nextInt();
		scan.close();
		int []p = {2, 3, 5 ,7, 11, 13};
		int []c = {4, 6, 8 ,9, 10, 12};

		double k1 = 0;
		double k2 = 0;
		for(int i = 0; i < 6; i++) {
			k1 += p[i];
			k2 += c[i];
		}
		k1 = k1 / 6.0;
		k2 = k2 / 6.0;
		double ans = Math.pow(k1, P) * Math.pow(k2, C);
		System.out.println(ans);

	}
}