Compilare: user.cpp: In function ‘void adauga(int)’: user.cpp:15:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < H[index].size(); i++) ^ user.cpp: In function ‘bool check(int)’: user.cpp:39:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < H[index].size(); i++) ^