06. Repainting

#include <iostream>

using namespace std;

int main() {
    int nylon, paint, thinner, hours;
    cin >> nylon >> paint >> thinner >> hours;

    double materialsPrice = (nylon + 2) * 1.50 + paint * 14.50 * 1.1 + thinner * 5 + 0.40;
    double workersPrice = materialsPrice * hours * 0.30;
    double totalPrice = materialsPrice + workersPrice;

    cout << totalPrice << endl;

    return 0;
}