Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:54:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[nod].size();++i) ~^~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:77:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<prim.size();++i) ~^~~~~~~~~~~~ user.cpp:92:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ver.size();++i) ~^~~~~~~~~~~