#include <bits/stdc++.h>
using namespace std;

int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);  
	double prim[] = {2,3,5,7,11,13};
	double comp[] = {4,6,8,9,10,12};
	double e1 = 0, e2 = 0;
	for(int i = 0; i < 6; i++) {
		e1 += prim[i] / 6;
		e2 += comp[i] / 6;
	}
	int p, c;
	cin >> p >> c;
	cout << setprecision(25) << pow(e1,p) * pow(e2, c) << endl;
	return 0;	
}