#include <iostream>
#include <iomanip>
using namespace std;
template <typename T>
T bPM(T z,T n, T mod){
  T ans = 1;
  while(n != 0){
    if(n%2){
      ans*=z;
      if(mod)ans%=mod;
    }
    n >>= 1;
    z*=z;
    if(mod)z%=mod;
  }
  return ans;
}
int main(){
    long long a,b;cin>>a>>b;
    cout << fixed << setprecision(13) << (double)bPM(41LL,a,0LL)*bPM(49LL,b,0LL)/(bPM(6LL,(a+b),0LL)) << endl;
    
}