class Pair
{
   public:
      Pair(int a, int b);
      int get_first() const;
      int get_second() const;
   private:
      int first;
      int second;
};

inline Pair::Pair(int a, int b)
{
   first = a;
   second = b;
}

inline int Pair::get_first() const
{
   return first;
}

inline int Pair::get_second() const
{
   return second;
}