#include "iostream"
#include "algorithm"
using namespace std;

int main() {
    int i,j,k=0;
    string a,b;
    cin>>b;
    for (int l = 0; l < 8; ++l) {
        cin>>a;
        for (int m = 0; m < a.length(); ++m) {
            if (a[m] != '.'){
                k++;
            }
        }
    }

    if (k % 2 == 0) {
        cout<<b<<endl;
    }else{
        if (b == "yukiko") {
            cout<<"oda"<<endl;
        } else {
            cout<<"yukiko"<<endl;
        }
    }


    return 0;
}