#include <bits/stdc++.h>
using namespace std;
int main() {
    double a,b;cin>>a>>b;
    a=a*10/36;
    if(a==b){
        cout << "same" << endl;
    } else if(a>b){
        cout << "KoD" << endl;
    } else {
        cout << "blackyuki" << endl;
    }
    return 0;
}