#include using namespace std; int main() { #ifdef DEBUG std::ifstream in("/home/share/inputf.in"); std::cin.rdbuf(in.rdbuf()); #endif string S; cin >> S; int n = 0; if(S == "oda") n++; for(int i = 0; i < 8; i++) { string tmp; cin >> tmp; for(int j = 0; j < 8; j++) { n += tmp[i] != '.'; } } bool ans = n % 2; cout << (ans ? "oda" : "yukiko") << endl; return 0; }