#include <iostream>
#include <map>
#include <string>
#include <iomanip>

using namespace std;

struct vect {
    double x;
    double y;
    double z;
};

void show(vect, int = 4);

vect summ(vect, vect);

vect sub(vect, vect);

vect multi(vect, double);

vect multi(double, vect);

vect multi(vect, vect);

int main(int count, char *args[]) {
    vect a{};
    a.x = 1;
    a.y = 2;
    a.z = 3;
    vect b{};
    b.x = 4;
    b.y = -5;
    b.z = 6;
    auto c = multi(a, b);
    show(c, 2);
}

vect summ(vect a, vect b) {
    vect c{};
    c.x = a.x + b.x;
    c.y = a.y + b.y;
    c.z = a.z + b.z;
    return c;
}

vect sub(vect a, vect b) {
    vect c{};
    c.x = a.x - b.x;
    c.y = a.y - b.y;
    c.z = a.z - b.z;
    return c;
}

vect multi(vect in, double num) {
    vect res{};
    res.x = in.x * num;
    res.y = in.y * num;
    res.z = in.z * num;
    return res;
}

vect multi(double num, vect in) {
    return multi(in, num);
}

vect multi(vect a, vect b) {
    vect res{};
    res.x = a.y * b.z - b.y * a.z;
    res.y = a.z * b.x - b.z * a.x;
    res.z = a.x * b.y - b.x * a.y;
    return res;
}

void show(vect shown, int size) {
    cout << "(" << setw(size) << shown.x << ";" << setw(size) << shown.y << ";" << setw(size) << shown.z << ")" << endl;
}