Eroare de compilare: main.cpp: In function 'int main()': main.cpp:32:16: error: no matching function for call to 'std::priority_queue<std::tuple<int, int, int>, std::vector<std::tuple<int, int, int> >, std::greater<std::tuple<int, int, int> > >::push(<brace-enclosed initializer list>)' 32 | pq.push({cost, a, b}); | ~~~~~~~^~~~~~~~~~~~~~ In file included from /usr/include/c++/12.2.1/queue:64, from main.cpp:4: /usr/include/c++/12.2.1/bits/stl_queue.h:738:7: note: candidate: 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(const value_type&) [with _Tp = std::tuple<int, int, int>; _Sequence = std::vector<std::tuple<int, int, int> >; _Compare = std::greater<std::tuple<int, int, int> >; value_type = std::tuple<int, int, int>]' 738 | push(const value_type& __x) | ^~~~ /usr/include/c++/12.2.1/bits/stl_queue.h:738:30: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const std::priority_queue<std::tuple<int, int, int>, std::vector<std::tuple<int, int, int> >, std::greater<std::tuple<int, int, int> > >::value_type&' {aka 'const std::tuple<int, int, int>&'} 738 | push(const value_type& __x) | ~~~~~~~~~~~~~~~~~~^~~ /usr/include/c++/12.2.1/bits/stl_queue.h:746:7: note: candidate: 'void std::priority_queue<_Tp, _Sequence, _Compare>::push(value_type&&) [with _Tp = std::tuple<int, int, int>; _Sequence = std::vector<std::tuple<int, int, int> >; _Compare = std::greater<std::tuple<int, int, int> >; value_type = std::tuple<int, int, int>]' 746 | push(value_type&& __x) | ^~~~ /usr/include/c++/12.2.1/bits/stl_queue.h:746:25: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::priority_queue<std::tuple<int, int, int>, std::vector<std::tuple<int, int, int> >, std::greater<std::tuple<int, int, int> > >::value_type&&' {aka 'std::tuple<int, int, int>&&'} 746 | push(value_type&& __x) | ~~~~~~~~~~~~~^~~ main.cpp:38:37: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 38 | while(!pq.empty() && mst.size() < n-1) | ~~~~~~~~~~~^~~~~ main.cpp:40:14: error: 'std::tuple<int, int, int> <structured bindings>' has incomplete type 40 | auto [cost, a, b] = pq.top(); | ^~~~~~~~~~~~ main.cpp:45:26: error: no matching function for call to 'std::vector<std::pair<int, int> >::push_back(<brace-enclosed initializer list>)' 45 | mst.push_back({a, b}); | ~~~~~~~~~~~~~^~~~~~~~ In file included from /usr/include/c++/12.2.1/vector:64, from main.cpp:3: /usr/include/c++/12.2.1/bits/stl_vector.h:1276:7: note: candidate: 'constexpr void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; value_type = std::pair<int, int>]' 1276 | push_back(const value_type& __x) | ^~~~~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1276:35: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const std::vector<std::pair<int, int> >::value_type&' {aka 'const std::pair<int, int>&'} 1276 | push_back(const value_type& __x) | ~~~~~~~~~~~~~~~~~~^~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1293:7: note: candidate: 'constexpr void std::vector<_Tp, _Alloc>::push_back(value_type&&) [with _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >; value_type = std::pair<int, int>]' 1293 | push_back(value_type&& __x) | ^~~~~~~~~ /usr/include/c++/12.2.1/bits/stl_vector.h:1293:30: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::vector<std::pair<int, int> >::value_type&&' {aka 'std::pair<int, int>&&'} 1293 | push_back(value_type&& __x) | ~~~~~~~~~~~~~^~~ main.cpp:50:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int i=0;i<mst.size();i++) | ~^~~~~~~~~~~ /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<std::tuple<int, int, int> >]' main.cpp:7:99: 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); | ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~ Non zero exit status: 1