#include <bits/stdc++.h>
using namespace std;
int main(){
string s; cin>>s;
int t = s == "yukiko" ? 1 : 0;
for(int i=0;i<8;i++) {
cin >> s;
for(int j=0;j<8;j++)
t += s[j] == '.' ? 1: 0;
t%=2;
}
cout << (t ? "yukiko" : "oda") << endl;
}