#include<bits/stdc++.h>
using namespace std;
int main(){
	int x,y,z,n;
	cin>>x>>y>>z;
	(x+y+z)/3==n;
	if(90<=n) cout<<"beijing";
	if(n<90) cout<<"nanjing";
	return 0;
}
/**************************************************************
	Problem: 1626
	User: panjinyan
	Language: C++
	Result: Wrong Answer
****************************************************************/