// #define _GLIBCXX_DEBUG #include using namespace std; #define rep(i, n) for (int i = 0; i < (int)(n); ++i) int main() { // Input long long A, B; cin >> A >> B; // Output A *= 1'000; B *= 3'600; cout << (A < B ? "blackyuki" : (A == B ? "same" : "KoD")) << endl; }