#include <iostream>
#include <cmath>
using namespace std;

int main(){
  int dice1[6] = {2, 3, 5, 7, 11, 13};
  int dice2[6] = {4, 6, 8, 9, 10, 12};
  int p, c;
  cin >> p >> c;
  double exp1 = 0, exp2 = 0, res = 1;
  for(int i = 0; i < 6; i++){
    exp1 += dice1[i];
    exp2 += dice2[i];
  }
  exp1 = (double) exp1 / 6;
  exp2 = (double) exp2 / 6;
  res = pow(exp1, p) * pow(exp2, c);
  cout.precision(15);
  cout << fixed << res << endl;
}