#include <iostream>
#include <string>
using namespace std;

class book
class rectangle
class Converter {
    double usd;
    double eur;
    double rub;
    double resultusd;
    double resulteur;
    double resultrub;
public:
    Converter(double _usd, double _eur, double _rub) {

        usd = _usd;
        eur = _eur;
        rub = _rub;

    }
    void Convert(double money){

        double resultusd = money * usd;
        double resulteur = money * eur;
        double resultrub = money * rub;
        cout << resultusd << endl;
        cout << resulteur << endl;
        cout << resultrub << endl;

}


};
int main(){


    double a;
    cin >> a;
    double b;
    cin >> b;
    double c;
    cin >> c;
    double d;
    cin >> d;
    Converter c1(a, b, c);
    c1.Convert(d);
return 0;

}