#include #include #define rep(i,n) for(int i = 0; i < n; i++) #define srep(i,a,b) for(int i = a; i < b; i++) #define all(A) (A).begin(),A.end() #define MOD 1000000007 using namespace std; using ll = long long; using P = pair; using Graph = vector>; int main(void){ string s; cin >> s; bool ok = 1; for(int i = 0; i < (int)s.size(); i += 3) if(s[i] != 'A' || s[i+1] != 'C') ok = 0; cout << (ok ? "Done!" : "Failed..."); }