Charity Campaign

#include <iostream>
#include <string>

using namespace std;

int main() {
    int days, cookers, cakes, waffles, pancakes;
    cin >> days >> cookers >> cakes >> waffles >> pancakes;

    double sum = days * cookers * ((cakes * 45) + (waffles * 5.80) + (pancakes * 3.20));

    printf("%.2f\n", sum - sum / 8);

    return 0;
}