Compilare: user.cpp: In function ‘void rez()’: user.cpp:45:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++){ ^ user.cpp:36:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,nod; ^ user.cpp: In function ‘int afis(int)’: user.cpp:58:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[nod].size();i++){ ^ user.cpp:65:1: warning: control reaches end of non-void function [-Wreturn-type] } ^