Eroare de compilare: In file included from /usr/include/c++/4.8/queue:63:0, from user.cpp:1: /usr/include/c++/4.8/bits/stl_function.h: In instantiation of ‘bool std::greater<_Tp>::operator()(const _Tp&, const _Tp&) const [with _Tp = Node]’: /usr/include/c++/4.8/bits/stl_heap.h:313:40: required from ‘void std::__adjust_heap(_RandomAccessIterator, _Distance, _Distance, _Tp, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Node*, std::vector<Node> >; _Distance = int; _Tp = Node; _Compare = std::greater<Node>]’ /usr/include/c++/4.8/bits/stl_heap.h:448:15: required from ‘void std::make_heap(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Node*, std::vector<Node> >; _Compare = std::greater<Node>]’ /usr/include/c++/4.8/bits/stl_queue.h:411:48: required from ‘std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue(const _Compare&, _Sequence&&) [with _Tp = Node; _Sequence = std::vector<Node>; _Compare = std::greater<Node>]’ user.cpp:75:54: required from here /usr/include/c++/4.8/bits/stl_function.h:226:20: error: no match for ‘operator>’ (operand types are ‘const Node’ and ‘const Node’) { return __x > __y; } ^ /usr/include/c++/4.8/bits/stl_function.h:226:20: note: candidates are: In file included from /usr/include/c++/4.8/bits/stl_algobase.h:64:0, from /usr/include/c++/4.8/deque:60, from /usr/include/c++/4.8/queue:60, from user.cpp:1: /usr/include/c++/4.8/bits/stl_pair.h:233:5: note: 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++/4.8/bits/stl_pair.h:233:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/4.8/queue:63:0, from user.cpp:1: /usr/include/c++/4.8/bits/stl_function.h:226:20: note: ‘const Node’ is not derived from ‘const std::pair<_T1, _T2>’ { return __x > __y; } ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/deque:60, from /usr/include/c++/4.8/queue:60, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator.h:309:5: note: 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++/4.8/bits/stl_iterator.h:309:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/4.8/queue:63:0, from user.cpp:1: /usr/include/c++/4.8/bits/stl_function.h:226:20: note: ‘const Node’ is not derived from ‘const std::reverse_iterator<_Iterator>’ { return __x > __y; } ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:67:0, from /usr/include/c++/4.8/deque:60, from /usr/include/c++/4.8/queue:60, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator.h:359:5: note: template<class _IteratorL, class _IteratorR> bool std::operator>(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&) operator>(const reverse_iterator<_IteratorL>& __x, ^ /usr/include/c++/4.8/bits/stl_iterator.h:359:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/4.8/queue:63:0, from user.cpp:1: /usr/include/c++/4.8/bits/stl_function.h:226:20: note: ‘const Node’ is not derived from ‘const std::reverse_iterator<_Iterator>’ { return __x > __y; } ^