#include "bits/stdc++.h"

using namespace std;

#define ll long long
#define vi  vector<int>
#define vvi vector<vi>
#define pi  pair<int,int>
#define mp  make_pair
#define pb  push_back
#define MOD 1e9 + 7
#define PAI  3.1415
#define all(x) (x).begin(),(x).end()
#define chmax(x,y) x = max(x,y)
#define chmin(x,y) x = min(x,y)
#define pr(x) cout << x << endl
#define Endl endl
#define rep(i,n) for(int i = 0 ; i < n; i++)

const int dx[4] = {1,0,-1,0};
const int dy[4] = {0,1,0,-1};
const int ddx[8] = {-1,0,1,-1,1,-1,0,1};
const int ddy[8] = {-1,-1,-1,0,0,1,1,1};
const int inf = 99999999;
const ll linf = 1LL << 62;

ll gcd(ll a,ll b){
  if(a < b)swap(a , b);
  if(a % b == 0) return b;
  else gcd(b, a%b);
}

ll lcm(ll a,ll b){
  if(a < b)swap(a , b);
  return (a/gcd(a , b)) * b;
}

int main(){

  char c;
  string s; cin >> s;
  int jud = 0;

   for(int i = 0; i < 8; i++)
   {
     for(int j = 0; j < 8; j++)
     {
       cin >> c;
       if(c != '.'){
         jud++;
       }
     }
   }
   
  if(jud % 2 == 0){
    pr(s);
  }
  else{
    if(s == "yukiko"){
      pr("oda");
    }
    else{
      pr("yukiko");
    }
  }

  return 0;
}