#include <bits/stdc++.h>
#include<atcoder/all>
#define int long long
#define double long double
using namespace std;
int size(int number){
    string numstr=to_string(number);
    return numstr.size();
}
signed main(void){
    int A,B;
    cin>>A>>B;
    if(A>B*3.6){
        cout<<"KoD"<<endl;
    }else if(A<B*3.6){
        cout<<"blackyuki"<<endl;
    }else{
        cout<<"same"<<endl;
    }
}