#include<iostream>
#include<cmath>
using namespace std;
int main()
{
double sum=0, p=1;
for(int R=1; R<=16; R++)
{
for (int i=1; i<=6; i++)
sum=(R+3)/(pow(R,3)+3*R+pow(i,3));
p=p*sum;
}
cout << " Natija =" <<p;

return 0;
}