Easter Lunch

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    int easterBreads, eggPacks, cookies;
    cin >> easterBreads >> eggPacks >> cookies;

    double sum = 3.20 * easterBreads + 4.35 * eggPacks  + 5.4 * cookies + 0.15 * 12 * eggPacks;

    cout << fixed << setprecision(2) << sum << endl;
    return 0;
}