template<typename T, typename U>
class myPair
{
    public:
        T first;
        U second;
    
        myPair(T first, U second)
        {
            this->first = first;
            this->second = second;
        }
};

template<typename T, typename U>
std::ostream& operator<<(std::ostream &os, const myPair<T,U> &p)
{
    os << "(" << p.first << ", " << p.second << ")";
}