Compilare: user.cpp: In function ‘void Dijkstra(int, int*&, std::vector<std::pair<int, int> >*)’: user.cpp:45:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<la[u].size();j++) ~^~~~~~~~~~~~~ user.cpp:24:6: warning: unused variable ‘ok’ [-Wunused-variable] int ok=0; ^~ user.cpp: In function ‘int main()’: user.cpp:84:10: warning: variable ‘asez’ set but not used [-Wunused-but-set-variable] int *asez, *fort; ^~~~