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

int main() {
    int N;
    cin >> N;
    vector <int> A(10);
    A[0]="pon";
    A[1]="pon";
    A[2]="hon";
    A[3]="bon";
    A[4]="hon";
    A[5]="hon";
    A[6]="pon";
    A[7]="hon";
    A[8]="pon";
    A[9]="hon";
    cout << A[N%10] << endl;
}
