Compilare: user.cpp: In function ‘void Prim()’: user.cpp:77:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[im].size();j++) ^ user.cpp:53:9: warning: unused variable ‘z’ [-Wunused-variable] int z,lg,i,nr; ^ user.cpp:53:11: warning: unused variable ‘lg’ [-Wunused-variable] int z,lg,i,nr; ^ user.cpp: In function ‘void Scrie()’: user.cpp:105:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<A.size(); i++) ^