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

using namespace std;

template<typename key, typename value>
void Print(ostream& out, const map<key, value>& container){
    bool first = true;

    for(const auto& [name, age]: container){
        if(!first){
            cout << ", ";
        }
        first = false;
        out << "(" << name << ", " << age << ")";
    }
}

template <typename T>
void Print(ostream& out, const T& container ){
    bool first = true;

    for (const auto& element : container) {
        if(!first){
            out << ", ";
        }
        first = false;
        out << element;
    }
}

template <typename T>
ostream& operator<<(ostream& out, const vector<T>& container) {
    out << "[";
    Print(out, container);
    out << "]";
    return out;
}

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

template <typename key, typename value>
ostream& operator<<(ostream& out, const map<key, value>& container) {
    out << "<";
    Print(out, container);
    out << ">";
    return out;
}

int main() {
    const set<string> cats = {"Мурка"s, "Белка"s, "Георгий"s, "Рюрик"s};
    cout << cats << endl;
    const vector<int> ages = {10, 5, 2, 12};
    cout << ages << endl;
    const map<string, int> cat_ages = {
        {"Мурка"s, 10},
        {"Белка"s, 5},
        {"Георгий"s, 2},
        {"Рюрик"s, 12}
    };
    cout << cat_ages << endl;
    return 0;
}