Compilare: main.cpp: In function 'void dijkstra(unsigned int, unsigned int, unsigned int, std::vector<std::vector<std::pair<int, int> > >, int*)': main.cpp:27:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 27 | for (int i=0; i<lista_vecini[nod].size(); ++i) | ~^~~~~~~~~~~~~~~~~~~~~~~~~