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

int main() {
  int N,M;
  cin >> N;
  M = N - N/10 *10;
  string ans;
  if (M==2 || M==4 || M==5 || M==7 || M==9) {
    ans = "hon";
  }
  else if (M==0 || M==1 || M==6 || M==8) {
    ans = "pon";
  }
  else if (M==3) {
    ans = "bon";
  }
  cout << ans << endl;

}