#include <bits/stdc++.h>
#define fastIO (cin.tie(0), cout.tie(0), ios::sync_with_stdio(false))
using namespace std;

int main() {
  fastIO;

  string name;
  cin >> name;
  vector<string> field(8);

  for (int i = 0; i < 8; ++i) {
    cin >> field[i];
  }

  int cnt = 0;
  for (int h = 0; h < 8; ++h) {
    for (int w = 0; w < 8; ++w) {
      if (field[h][w] != '.') {
        cnt++;
      }
    }
  }

  if (name == "yukiko") {
    if (cnt % 2 == 1)
      cout << "oda" << '\n';
    else
      cout << "yukiko" << '\n';
  } else {
    if (cnt % 2 == 1)
      cout << "yukiko" << '\n';
    else
      cout << "oda" << '\n';
  }

  return 0;
}