#include <cstdio> #include <iostream> #include <sstream> #include <fstream> #include <iomanip> #include <algorithm> #include <cmath> #include <string> #include <vector> #include <list> #include <queue> #include <stack> #include <set> #include <map> #include <bitset> #include <numeric> #include <limits> #include <climits> #include <cfloat> #include <functional> using namespace std; int main() { string s; cin >> s; int cnt = 0; for(int i=0; i<64; ++i){ char c; cin >> c; if(c != '.') ++ cnt; } if((s == "oda") ^ (cnt % 2 == 0)) cout << "yukiko" << endl; else cout << "oda" << endl; return 0; }