#include <iostream>
#include <math.h>

using namespace std;

int main() {

    int x;

    cout << "Iveskite x reiksme: "; cin >> x;

    double y = ( (sqrt(pow(x, 4) + 3)) / ( abs((pow(x, 2) + 5)) ) ) + 4 * x;

    cout << y;

    return 0;
}