import java.util.Scanner;

public class Main_yukicoder212 {
	
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);

		int p = sc.nextInt();
		int c = sc.nextInt();

		int[] d1 = {2, 3, 5, 7, 11, 13};
		int[] d2 = {4, 6, 8, 9, 10, 12};

		double e1 = 0;
		double e2 = 0;
		for (int i = 0; i < 6; i++) {
			e1 += (double)d1[i] / 6;
			e2 += (double)d2[i] / 6;
		}
		
		System.out.println(Math.pow(e1, p) * Math.pow(e2,  c));
		
		sc.close();
	}
}