import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] first = br.readLine().split(" ", 2);
        int p = Integer.parseInt(first[0]);
        int c = Integer.parseInt(first[1]);
        int[] pArr = new int[]{2,3,5,7,11,13};
        int[] cArr = new int[]{4,6,8,9,10,12};
        double pEx = 0;
        double cEx = 0;
        for (int i = 0; i < 6; i++) {
            pEx += pArr[i] / 6.0;
            cEx += cArr[i] / 6.0;
        }
        System.out.println(Math.pow(pEx, p) * Math.pow(cEx, c));
    }
}