#include<bits/stdc++.h>
using namespace std;
//ZBSED
int main(){
	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;
	}
}