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

int main(){
   double ans = 1,p,c,prime = (2+3+5+7+11+13) / 6.0,composite = (4+6+8+9+10+12) / 6.0;
   cin >> p >> c;
   while(p--) ans *= prime;
   while(c--) ans *= composite;
   cout << fixed << setprecision(10) << ans << endl;
}