Eroare de compilare: user.cpp:17:34: error: template argument 1 is invalid priority_queue <pair <int , int> heap; ^ user.cpp:17:34: error: template argument 2 is invalid user.cpp:17:34: error: template argument 3 is invalid user.cpp: In function ‘void dfs3(int, int)’: user.cpp:51:13: error: ‘heap’ was not declared in this scope heap.push(make_pair(nrd[*it] , *it)); ^ user.cpp:55:27: error: ‘heap’ was not declared in this scope pair<int , int> aux = heap.top(); ^