#include<bits/stdc++.h>
using namespace std;
int main(){
    int a,s,d;
    cin>>a>>s>>d;
    if (a>=90)cout<<"beijing";
      else if(s>=90) cout<<"beijing";
        else if(d>=90) cout<<"beijing";
          else cout<<"nanjing";
	return 0;
}

/**************************************************************
	Problem: 1627
	User: LYY001
	Language: C++
	Result: Accepted
	Time:14 ms
	Memory:2072 kb
****************************************************************/