#include <bits/stdc++.h>
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==3) cout >> "bon" >> endl;
  else cout >> "pon" >> endl;
}
