#include <bits/stdc++.h>
using namespace std;
int dx[]={2,3,5,7,11,13};
int dy[]={4,6,8,9,10,12};

int main(){
        int P,C;
        cin>>P>>C;
        double x=0,y=0;
        for (int i = 0; i < 6; i++) {
                x+=dx[i];
                y+=dy[i];
        }
        x/=6;
        y/=6;
        cout<<fixed<<setprecision(12)<<pow(x,P)*pow(y,C)<<endl;
        return 0;
}