Compilare: user.cpp: In function ‘long long unsigned int lgPut(long long unsigned int, long long unsigned int)’: user.cpp:22:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(ull bit = 0; (1 << bit) <= K; ++ bit){ ^ user.cpp: In function ‘void calculateFactorial()’: user.cpp:46:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i <= size; ++ i){ ^ user.cpp:47:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(; index <= fact[i].first; ++ index) ^