#include <iostream>

using std::cout;
using std::endl;


template <class T>
class Pair
{
public:
  Pair(T left, T right): left(left), right(right) {}
  const T& getLeft() const { return left; }
  const T& getRight() const { return right; }

private:
  T left;
  T right;
};


template <template <class ST> class T>
class Node
{
public:
  Node(T<ST> value):
    value(value)
  {
  }
  const auto& getValue() const { return value; }
  auto getLeft() { return value.getLeft(); } // ST getLeft()
  auto getRight() { return value.getRight(); } // ST getRight()

private:
  T<ST> value;
};


int main()
{
  Node<Pair<int>> node({5, 6});

  // cout << "Created a node with a pair with left "
  //      << node.getLeft()
  //      << " and right "
  //      << node.getRight()
  //      << endl;

  return 0;
}