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

int main() {
  int a; cin >> a;
  int size = ceil(log10(a));
  for(int i=0;i<size;++i){
    a //= 10;
  }
  
  if(a==3){
  	cout << "bon";
  } else if (a==0 ||a= 1||a= 6 ||a= 8){
  	cout << "pon";
  } else {
  	cout << "hon";
  }
}