
#include<iostream>
using namespace std;
int main(){
int n;cin>>n;
    if (n%10 == 2 || n%10 == 4 || n%10 == 5 || n%10 == 7 || n%10 == 9) {
        cout<<"hon";
    } else if (n%10 == 0 || n%10 == 1 || n%10 == 6 || n%10 == 8) {
        cout<<"pon";
    } else {
        cout<<"bon";
    return 0;}



