Compilare: user.cpp: In function ‘void adauga(long long int)’: user.cpp:17:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<Hash[x%M].size() && !ok; i++) ^ user.cpp: In function ‘void sterge(long long int)’: user.cpp:27:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<Hash[x%M].size(); i++) ^ user.cpp: In function ‘bool exista(long long int)’: user.cpp:42:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<Hash[x%M].size(); i++) ^