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


int main(){
  int n;
  cin >> n;
  string ans;
  if(n%10 == 2 || n%10 == 4 || n%10 == 5 || n%10 == 7 || n%10 == 9) {
    ans = 'hon';
  }
  else if(n%10 == 0 || n%10 == 1 || n%10 == 6 || n%10 == 8) {
    ans = 'pon';
  }
  else {
    ans = 'bon'
  }

  cout << ans << endl;
  return 0;
}