#include <iostream>
using namespace std;
int main()
{
int an;
cin >> an;
if(an % 4 ==0 && an % 100 !=0 || an % 400==0)
cout << "bisect";
else
cout << "nebisect";
return 0;
}
#include<iostream>
using namespace std;
int main(){
int x;
cin>>x;
if((x%4==0 && x%100!=0) || (x%400==0))
cout<<"bisect";
else
cout<<"nebisect";
return 0;
}
