#include<bits/std.h>
using namespace std;

int main(){
  int N;
  cin >> N;
  if(N >= 100){
    int h = N/100;
    N -= 100*h;
  }
  if(N >= 10){
    int t = N/10;
    N -= 10*t;
  }
  if(N == 3){
    cout << "bon" << endl;
  }else if( (N == 0) || (N == 1) || (N == 6) || (N == 8) ){
    cout << "pon" << endl;
  }else{
    cout << "hon" << endl;
  }
}