Compilare: user.cpp: In function ‘int main()’: user.cpp:130:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<sv.size(); ++i){ ^ user.cpp:131:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i != sv.size()-1) ^ user.cpp:110:9: warning: unused variable ‘n_nu_iese’ [-Wunused-variable] int n_nu_iese = 0, n_nu_intra = 0; ^ user.cpp:110:24: warning: unused variable ‘n_nu_intra’ [-Wunused-variable] int n_nu_iese = 0, n_nu_intra = 0; ^