#include<iostream>
#include <string>
#include <cstring>
using namespace std;
 
int main(){
    int N;
    cin>> N;
  	if(N%10 ==2||N%10 ==4||N%10 ==5||N%10 ==7||N%10 ==9) cout<<"hon"<<endl;
  	else if((N%10 ==0||N%10 ==1||N%10 ==6||N%10 ==8) cout<<"pon"<<endl;
    else cout<<"bon"<<endl;
    return 0;
}