#include <iostream>
#include <vector>

std::vector<int> make_values() {
    std::vector<int> result{2, 5};
    return result;
}

int main() {
    auto first = make_values();
    auto second = make_values();
    first[0] = 9;
    std::cout << "first " << first[0] << ' ' << first[1] << '\n';
    std::cout << "second " << second[0] << ' ' << second[1] << '\n';
    return 0;
}