Compilare: user.cpp: In function ‘void DFS(int, int&, std::vector<bool>&)’: user.cpp:18:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < A[p].size(); i++) ^ user.cpp:17:9: warning: variable ‘k’ set but not used [-Wunused-but-set-variable] int k; ^ user.cpp: In function ‘int main()’: user.cpp:72:27: warning: ‘rad’ may be used uninitialized in this function [-Wmaybe-uninitialized] DFS(rad, rez, dir); ^