Compilare: user.cpp: In function ‘int dreptunghi_arie_maxima(const std::vector<short int>&)’: user.cpp:13:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < vv.size(); ++i){ ^ user.cpp:23:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(st.back() != vv.size() && vv[st.back()] >= vv[i]){ ^ user.cpp:31:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < vv.size(); ++i){ ^