Compilare: user.cpp: In function ‘bool check(int)’: user.cpp:52:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(Hash.size() != (1 << i)) ^ user.cpp: In function ‘int main()’: user.cpp:99:13: warning: unused variable ‘i’ [-Wunused-variable] int i = mij; ^ user.cpp:92:10: warning: unused variable ‘ok’ [-Wunused-variable] bool ok = true; ^