Compilare: main.cpp: In function 'void dijkstra()': main.cpp:20:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int i=0; i<graph[x].size(); i++) | ~^~~~~~~~~~~~~~~~ main.cpp:15:13: warning: unused variable 'd' [-Wunused-variable] 15 | int d=q.top().first; | ^