#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  long double x = (2 + 3 + 5 + 7 + 11 + 13) / 6.0;
  long double y = (4 + 6 + 8 + 9 + 10 + 12) / 6.0;
  int a, b;
  cin >> a >> b;
  cout << fixed << setprecision(15) << powl(x, a) * powl(y, b) << endl;
  return 0;
}