Compilare: user.cpp: In function ‘int Dijkstra()’: user.cpp:45:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<G[dr.nod].size();i++) ^ user.cpp:71:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp:70:20: warning: ‘col’ may be used uninitialized in this function [-Wmaybe-uninitialized] g<<minim<<' '<<col<<'\n'; ^