答

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
   double x, a, b, c, d;
   
   cin >> x >> a >> b >> c >> d;
   
   double result = a * x * x * x + b * x * x + c * x + d;
   
   cout << fixed << setprecision(5) << result << endl;
   
   return 0;