Eroare de compilare: main.cpp: In function 'int main()': main.cpp:31:14: error: 'std::tuple<int, int, int> <structured bindings>' has incomplete type 31 | auto [cost,u,tata] = pq.top(); | ^~~~~~~~~~~~~ In file included from /usr/include/c++/12.2.1/vector:64, from /usr/include/c++/12.2.1/queue:61, from main.cpp:4: /usr/include/c++/12.2.1/bits/stl_vector.h: In instantiation of 'constexpr std::_Vector_base<_Tp, _Alloc>::~_Vector_base() [with _Tp = std::tuple<int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int> >]': /usr/include/c++/12.2.1/bits/stl_vector.h:526:7: required from 'std::priority_queue<_Tp, _Sequence, _Compare>::priority_queue() [with _Seq = std::vector<std::tuple<int, int, int> >; _Requires = void; _Tp = std::tuple<int, int, int>; _Sequence = std::vector<std::tuple<int, int, int> >; _Compare = std::greater<void>]' main.cpp:28:79: required from here /usr/include/c++/12.2.1/bits/stl_vector.h:367:49: error: invalid use of incomplete type 'class std::tuple<int, int, int>' 367 | _M_impl._M_end_of_storage - _M_impl._M_start); | ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ In file included from /usr/include/c++/12.2.1/bits/stl_algobase.h:64, from /usr/include/c++/12.2.1/algorithm:60, from main.cpp:1: /usr/include/c++/12.2.1/bits/stl_pair.h:90:11: note: declaration of 'class std::tuple<int, int, int>' 90 | class tuple; | ^~~~~ In file included from /usr/include/c++/12.2.1/bits/stl_pair.h:60: /usr/include/c++/12.2.1/type_traits: In substitution of 'template<class _Tp, class ... _Args> using __is_nothrow_constructible_impl = std::__bool_constant<__is_nothrow_constructible(_Tp)> [with _Tp = std::tuple<int, int, int>; _Args = {int, int, int}]': /usr/include/c++/12.2.1/type_traits:1047:12: required from 'struct std::is_nothrow_constructible<std::tuple<int, int, int>, int, int, int>' /usr/include/c++/12.2.1/bits/alloc_traits.h:513:57: required from 'static constexpr void std::allocator_traits<std::allocator<_CharT> >::construct(allocator_type&, _Up*, _Args&& ...) [with _Up = std::tuple<int, int, int>; _Args = {int, int, int}; _Tp = std::tuple<int, int, int>; allocator_type = std::allocator<std::tuple<int, int, int> >]' /usr/include/c++/12.2.1/bits/vector.tcc:117:30: required from 'constexpr std::vector<_Tp, _Alloc>::reference std::vector<_Tp, _Alloc>::emplace_back(_Args&& ...) [with _Args = {int, int, int}; _Tp = std::tuple<int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int> >; reference = std::tuple<int, int, int>&]' /usr/include/c++/12.2.1/bits/stl_queue.h:756:18: required from 'void std::priority_queue<_Tp, _Sequence, _Compare>::emplace(_Args&& ...) [with _Args = {int, int, int}; _Tp = std::tuple<int, int, int>; _Sequence = std::vector<std::tuple<int, int, int> >; _Compare = std::greater<void>]' main.cpp:29:15: required from here /usr/include/c++/12.2.1/type_traits:1042:25: error: invalid use of incomplete type 'class std::tuple<int, int, int>' 1042 | = __bool_constant<__is_nothrow_constructible(_Tp, _Args...)>; | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /usr/include/c++/12.2.1/bits/stl_pair.h:90:11: note: declaration of 'class std::tuple<int, int, int>' 90 | class tuple; | ^~~~~ /usr/include/c++/12.2.1/type_traits: In instantiation of 'struct std::is_nothrow_constructible<std::tuple<int, int, int>, int, int, int>': /usr/include/c++/12.2.1/bits/alloc_traits.h:513:57: required from 'static constexpr void std::allocator_traits<std::allocator<_CharT> >::construct(allocator_type&, _Up*, _Args&& ...) [with _Up = std::tuple<int, int, int>; _Args = {int, int, int}; _Tp = std::tuple<int, int, int>; allocator_type = std::allocator<std::tuple<int, int, int> >]' /usr/include/c++/12.2.1/bits/vector.tcc:117:30: required from 'constexpr std::vector<_Tp, _Alloc>::reference std::vector<_Tp, _Alloc>::emplace_back(_Args&& ...) [with _Args = {int, int, int}; _Tp = std::tuple<int, int, int>; _Alloc = std::allocator<std::tuple<int, int, int> >; reference = std::tuple<int, int, int>&]' /usr/include/c++/12.2.1/bits/stl_queue.h:756:18: required from 'void std::priority_queue<_Tp, _Sequence, _Compare>::emplace(_Args&& ...) [with _Args = {int, int, int}; _Tp = std::tuple<int, int, int>; _Sequence = std::vector<std::tuple<int, int, int> >; _Compare = std::greater<void>]' main.cpp:29:15: required from here /usr/include/c++/12.2.1/type_traits:1050:52: error: static assertion failed: template argument must be a complete class or an unbounded array 1050 | static_assert(std::__is_complete_or_unbounded(__type_identity<_Tp>{}), | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~ /usr/include/c++/12.2.1/type_traits:1050:52: note: 'std::__is_complete_or_unbounded<__type_identity<tuple<int, int, int> > >((std::__type_identity<std::tuple<int, int, int> >(), std::__type_identity<std::tuple<int, int, int> >()))' evaluates to false In file included from /usr/include/c++/12.2.1/ext/alloc_traits.h:34, from /usr/include/c++/12.2.1/bits/basic_string.h:39, from /usr/include/c++/12.2.1/string:53, from /usr/include/c++/12.2.1/bits/locale_classes.h:40, from /usr/include/c++/12.2.1/bits/ios_base.h:41, from /usr/include/c++/12.2.1/ios:42, from /usr/include/c++/12.2.1/istream:38, from /usr/include/c++/12.2.1/fstream:38, from main.cpp:2: Non zero exit status: 1