Compilare: user.cpp: In function ‘int main()’: user.cpp:27:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); ++i){ ^ user.cpp:33:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(al_catelea == el.size()-1){ ^ user.cpp:35:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] g << (rez < v.size() ? rez : -1) << '\n'; } ^