#ifndef TEMPLATEPAIR_H_
#define TEMPLATEPAIR_H_

#include <ostream>

using namespace std;

template <typename T1, typename T2>
class Pair
{
public:
    Pair(T1 a_value, T2 b_value);
    T1 first()  const;
    T2 second() const;

private:
    T1 a;
    T2 b;
};

template <typename T1, typename T2>
Pair<T1, T2>::Pair(T1 a_value, T2 b_value) : a(a_value), b(b_value) {}

template <typename T1, typename T2>
T1 Pair<T1, T2>::first()  const { return a; }

template <typename T1, typename T2>
T2 Pair<T1, T2>::second() const { return b; }

template <typename T1, typename T2>
ostream& operator <<(ostream &outs, Pair<T1, T2>& p)
{
    outs << "(" << p.first() << ", " << p.second() << ")";
    return outs;
}

#endif /* TEMPLATEPAIR_H_ */