#include using namespace std; typedef long long ll; typedef pair P; const int INF = 1e9; const int mod = 1e9+7; const double EPS = 1e-10; const double PI = acos(-1.0); int main() { string s,t; cin >> s; t = (s == "oda" ? "yukiko" : "oda"); int cnt = -3; for(int i = 0; i < 8; i++){ string str; cin >> str; for(int j = 0; j < 8; j++) if(str[j] != '.') cnt++; } cout << (cnt % 2 ? s : t)<< endl; return 0; }