print cont

#include <iostream>
#include <vector>
#include <set>

using namespace std;

template<typename ContainerType>
ostream& Print(ostream& output_stream, const ContainerType& container) {
    if (container.size()) {
        int length = container.size() - 1;
        for (const auto& item : container) {
            output_stream << item;

            if (!length) {
                break;
            }
            output_stream << ", ";
            --length;
        }
    }

    return output_stream;
}

using namespace std;
template <typename Type>
ostream& operator<<(ostream& out, const vector<Type>& container) {
    return Print(out, container);
}

template <typename Type>
ostream& operator<<(ostream& out, const set<Type>& container) {
    return Print(out, container);
}

int main() {

    const vector<int> ages = {10, 5, 2, 12};
    cout << ages << endl;

    const set<string> cats = {"Мурка"s, "Белка"s, "Георгий"s, "Рюрик"s};
    cout << cats << endl;

    return 0;
}