#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <set>
using namespace std;

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

int main(){
	int p,c;
	cin >> p >> c;

	double x = 0;
	double y = 0;
	for(int i=0; i<6; i++){
		x += a[i];
		y += b[i];
	}
	x *= 1.0/6.0;
	y *= 1.0/6.0;

	double ans = 1;
	for(int i=0; i<p; i++){
		ans *= x;
	}
	for(int i=0; i<c; i++){
		ans *= y;
	}

	printf("%.18f\n", ans);

	return 0;
}