Compilare: user.cpp: In function ‘void Prim()’: user.cpp:73:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[im].size();j++) ^ user.cpp:52:9: warning: unused variable ‘z’ [-Wunused-variable] int z,lg,i,nr; ^ user.cpp:52:11: warning: unused variable ‘lg’ [-Wunused-variable] int z,lg,i,nr; ^ user.cpp:52:16: warning: unused variable ‘nr’ [-Wunused-variable] int z,lg,i,nr; ^ user.cpp: In function ‘void Scrie()’: user.cpp:100:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1; i<A.size(); i++) ^