Eroare de compilare: In file included from /usr/include/c++/6/string:48:0, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, from /usr/include/c++/6/ios:42, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:9: /usr/include/c++/6/bits/stl_function.h: In instantiation of 'constexpr bool std::greater<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = trap]': /usr/include/c++/6/bits/predefined_ops.h:125:18: required from 'constexpr bool __gnu_cxx::__ops::_Iter_comp_iter<_Compare>::operator()(_Iterator1, _Iterator2) [with _Iterator1 = __gnu_cxx::__normal_iterator<trap*, std::vector<trap> >; _Iterator2 = __gnu_cxx::__normal_iterator<trap*, std::vector<trap> >; _Compare = std::greater<trap>]' /usr/include/c++/6/bits/stl_heap.h:217:14: required from 'void std::__adjust_heap(_RandomAccessIterator, _Distance, _Distance, _Tp, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<trap*, std::vector<trap> >; _Distance = long int; _Tp = trap; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<std::greater<trap> >]' /usr/include/c++/6/bits/stl_heap.h:335:22: required from 'void std::__make_heap(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<trap*, std::vector<trap> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<std::greater<trap> >]' /usr/include/c++/6/bits/stl_heap.h:388:23: required from 'void std::make_heap(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<trap*, std::vector<trap> >; _Compare = std::greater<trap>]' /usr/include/c++/6/bits/stl_queue.h:447:23: required from 'std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = trap; _Sequence = std::vector<trap>; _Compare = std::greater<trap>]' main.cpp:68:68: required from here /usr/include/c++/6/bits/stl_function.h:376:20: error: no match for 'operator>' (operand types are 'const trap' and 'const trap') { return __x > __y; } ~~~~^~~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:64:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:9: /usr/include/c++/6/bits/stl_pair.h:454:5: note: candidate: template<class _T1, class _T2> constexpr bool std::operator>(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&) operator>(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) ^~~~~~~~ /usr/include/c++/6/bits/stl_pair.h:454:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/6/string:48:0, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, from /usr/include/c++/6/ios:42, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:9: /usr/include/c++/6/bits/stl_function.h:376:20: note: 'const trap' is not derived from 'const std::pair<_T1, _T2>' { return __x > __y; } ~~~~^~~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:9: /usr/include/c++/6/bits/stl_iterator.h:310:5: note: candidate: template<class _Iterator> bool std::operator>(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&) operator>(const reverse_iterator<_Iterator>& __x, ^~~~~~~~ /usr/include/c++/6/bits/stl_iterator.h:310:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/6/string:48:0, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, Non zero exit status: 1