Compilare: user.cpp: In function ‘bool verificare(int)’: user.cpp:21:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<H[niv].size();++i) ^ user.cpp: In function ‘void stergere(int)’: user.cpp:30:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<H[niv].size();++i) ^