#ifndef H_9E0FB1CD4A804878B163933022B6AE52
#define H_9E0FB1CD4A804878B163933022B6AE52

#include <iterator>
#include <functional>

template <std::random_access_iterator T>
void heapsort(T begin, T end);

template <std::random_access_iterator T>
void heapsort(T begin, T end, std::function<bool(decltype(*std::declval<T>()), decltype(*std::declval<T>()))> comparer);

#endif //H_9E0FB1CD4A804878B163933022B6AE52