Christmas Preparation

#include <iostream>
#include <string>

using namespace std;

int main() {
    double paper, cloth, glue, discount;
    cin >> paper >> cloth >> glue >> discount;

    double paperPrice = paper * 5.80, clothPrice = cloth * 7.20, gluePrice = glue * 1.20;

    printf("%.3f\n", (paperPrice + clothPrice + gluePrice) * (1.0 - discount / 100));

    return 0;
}