#include <bits/stdc++.h>
using namespace std;
int main(){
    int N;
    cin >> N;
    int n = N % 10;
    if(n == 2 ||n == 4 || n == 5 || n == 7 || n == 9)cout << "hon";
    else if(n == 3)cout << "bon";
    else cout << "pon";
    cout << endl;
    return 0;
}