Eroare de compilare: main.cpp: In function 'int main()': main.cpp:30:31: error: cannot convert 'std::pair<int, int>' to 'int' in initialization for(int i: gr[a.second]){ ^ main.cpp:31:23: error: request for member 'first' in 'i', which is of non-class type 'int' if(dist[i.first] > dist[a.second] + i.second){ ^~~~~ main.cpp:31:51: error: request for member 'second' in 'i', which is of non-class type 'int' if(dist[i.first] > dist[a.second] + i.second){ ^~~~~~ main.cpp:32:24: error: request for member 'first' in 'i', which is of non-class type 'int' dist[i.first] > dist[a.second] + i.second; ^~~~~ main.cpp:32:52: error: request for member 'second' in 'i', which is of non-class type 'int' dist[i.first] > dist[a.second] + i.second; ^~~~~~ main.cpp:33:33: error: request for member 'first' in 'i', which is of non-class type 'int' pq.push({dist[i.first], i.first}); ^~~~~ main.cpp:33:43: error: request for member 'first' in 'i', which is of non-class type 'int' pq.push({dist[i.first], i.first}); ^~~~~ main.cpp:33:49: error: no matching function for call to 'std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int> >, std::greater<std::pair<int, int> > >::push(<brace-enclosed initializer list>)' pq.push({dist[i.first], i.first}); ^ In file included from /usr/include/c++/6/queue:64:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:86, from main.cpp:1: /usr/include/c++/6/bits/stl_queue.h:558:7: note: candidate: void std::priority_queue<_Tp, _Sequence, _Compare>::push(const value_type&) [with _Tp = std::pair<int, int>; _Sequence = std::vector<std::pair<int, int> >; _Compare = std::greater<std::pair<int, int> >; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<int, int>] push(const value_type& __x) ^~~~ /usr/include/c++/6/bits/stl_queue.h:558:7: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'const value_type& {aka const std::pair<int, int>&}' /usr/include/c++/6/bits/stl_queue.h:566:7: note: candidate: void std::priority_queue<_Tp, _Sequence, _Compare>::push(std::priority_queue<_Tp, _Sequence, _Compare>::value_type&&) [with _Tp = std::pair<int, int>; _Sequence = std::vector<std::pair<int, int> >; _Compare = std::greater<std::pair<int, int> >; std::priority_queue<_Tp, _Sequence, _Compare>::value_type = std::pair<int, int>] push(value_type&& __x) ^~~~ /usr/include/c++/6/bits/stl_queue.h:566:7: note: no known conversion for argument 1 from '<brace-enclosed initializer list>' to 'std::priority_queue<std::pair<int, int>, std::vector<std::pair<int, int> >, std::greater<std::pair<int, int> > >::value_type&& {aka std::pair<int, int>&&}' Non zero exit status: 1