Compilare: user.cpp: In function ‘int main()’: user.cpp:35:28: warning: argument to ‘sizeof’ in ‘void* memset(void*, int, size_t)’ call is the same expression as the destination; did you mean to dereference it? [-Wsizeof-pointer-memaccess] memset(reached, 0, sizeof(reached)); ^ user.cpp:52:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < digits.size(); i++) ^