#include<bits/stdc++.h>
using namespace std;
int main(){
  string s;
  cin >> s;
  if(s[s.length() - 1] == '2' || s[s.length() - 1] == '4' || s[s.length() - 1] == '5' || s[s.length() - 1] == '7' || s[s.length() - 1] == '9'){
    cout << "hon";
    break;
  }
  else if(s[s.length() - 1] == '0' || s[s.length() - 1] == '1' || s[s.length() - 1] == '6' || s[s.length() - 1] == '8'){
    cout << "pon";
    break;
  }
  else
    cout << "bon";
  return 0;
}