#include <bits/stdc++.h>
using namespace std;
int main() {
  int N;
  cin >> N;
  
  if( N % 10 = 2, 4 , 5 , 7 ,9){
    cout << "hon" << endl;
  }
  
  else if ( N % 10 = 0 , 1 ,6 ,8 ){
    cout << "pon" << endl;
  }
  
  else if ( N % 10  = 3 ) {
    cout << "bon" << endl;
  }
  
  
}