#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); ++i)
using namespace std;
using ll = long long;
using P = pair<int,int>;

int main() {
  int N;
  cin>>N;
  if(N%10==3) cout << "bon" << endl;
  else if(N%10==0 || N%10==1 || N%10==6 || N%10==8 ) cout << "pon" <, endl;
  else cout << "hon" << endl;
}