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#ifndef EXT_UTILS_INCLUDED
#define EXT_UTILS_INCLUDED

namespace ext
{

template <class Ty1, class Ty2>
class pair
{
        public:
                typedef Ty1 first_type;
                typedef Ty2 second_type;
                
                Ty1 first;
                Ty2 second;
                
                pair() 
                        : first(Ty1()), second(Ty2()) { }
                pair(const Ty1& val1, const Ty2& val2) 
                        : first(val1), second(val2) { }
                pair(const pair& other)
                        : first(other.first), second(other.second) { }
};

template <class Ty>
class less
{
        public:
                bool operator() (const Ty& left, const Ty& right)
                {
                        return first < second;
                }
};

}; // namespace ext

#endif // !defined(EXT_UTILS_INCLUDED)