Eroare de compilare: user.cpp: In function ‘void bfs(int)’: user.cpp:18:9: error: expected ‘;’ before ‘b’ b.pop(); ^ user.cpp:19:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<a[el].size();i++) ^ user.cpp:21:30: error: expected ‘]’ before ‘)’ token if (c[a[el][i]==0) ^