Eroare de compilare: In file included from /usr/include/c++/6/algorithm:62:0, from main.cpp:8: /usr/include/c++/6/bits/stl_algo.h: In instantiation of 'void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]': /usr/include/c++/6/bits/stl_algo.h:1882:25: required from 'void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:1968:31: required from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:4739:18: required from 'void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = bool (*)(Edge, Edge)]' main.cpp:83:33: required from here /usr/include/c++/6/bits/stl_algo.h:1849:17: error: invalid initialization of non-const reference of type 'Edge&' from an rvalue of type 'std::remove_reference<Edge&>::type {aka Edge}' *__first = _GLIBCXX_MOVE(__val); ^ main.cpp:16:11: note: initializing argument 1 of 'Edge& Edge::operator=(Edge&)' Edge& operator= (Edge &obj){ ^~~~~~~~ In file included from /usr/include/c++/6/bits/stl_algo.h:61:0, from /usr/include/c++/6/algorithm:62, from main.cpp:8: /usr/include/c++/6/bits/stl_heap.h: In instantiation of 'void std::__pop_heap(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]': /usr/include/c++/6/bits/stl_algo.h:1672:19: required from 'void std::__heap_select(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:1930:25: required from 'void std::__partial_sort(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:1945:27: required from 'void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Size = long int; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:1965:25: required from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:4739:18: required from 'void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = bool (*)(Edge, Edge)]' main.cpp:83:33: required from here /usr/include/c++/6/bits/stl_heap.h:246:17: error: invalid initialization of non-const reference of type 'Edge&' from an rvalue of type 'std::remove_reference<Edge&>::type {aka Edge}' *__result = _GLIBCXX_MOVE(*__first); ^ main.cpp:16:11: note: initializing argument 1 of 'Edge& Edge::operator=(Edge&)' Edge& operator= (Edge &obj){ ^~~~~~~~ In file included from /usr/include/c++/6/bits/char_traits.h:39:0, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:5: /usr/include/c++/6/bits/stl_algobase.h: In instantiation of 'void std::iter_swap(_ForwardIterator1, _ForwardIterator2) [with _ForwardIterator1 = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _ForwardIterator2 = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >]': /usr/include/c++/6/bits/stl_algo.h:84:20: required from 'void std::__move_median_to_first(_Iterator, _Iterator, _Iterator, _Iterator, _Compare) [with _Iterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:1918:34: required from '_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:1950:38: required from 'void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Size = long int; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:1965:25: required from 'void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<bool (*)(Edge, Edge)>]' /usr/include/c++/6/bits/stl_algo.h:4739:18: required from 'void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<Edge*, std::vector<Edge> >; _Compare = bool (*)(Edge, Edge)]' main.cpp:83:33: required from here /usr/include/c++/6/bits/stl_algobase.h:148:11: error: no matching function for call to 'swap(Edge&, Edge&)' swap(*__a, *__b); ~~~~^~~~~~~~~~~~ In file included from /usr/include/c++/6/bits/nested_exception.h:40:0, from /usr/include/c++/6/exception:171, from /usr/include/c++/6/ios:39, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:5: Non zero exit status: 1