#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <complex>
#include <queue>
#include <set>
#include <map>
#include <iomanip>

using namespace std;

#define REP(i,a,b) for(int i=a;i<(int)b;i++)
#define rep(i,n) REP(i,0,n)

typedef long long ll;

int main() {

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

  int p, c; cin >> p >> c;
  double ps = 0; rep(i, 6) ps += P[i];
  ps /= 6.0;
  double cs = 0; rep(i, 6) cs += C[i];
  cs /= 6.0;
  double a = 1;
  rep(i, p) a *= ps;
  rep(i, c) a *= cs;

  cout << setprecision(10) << a << endl;

  return 0;
}