#include <bits/stdc++.h>
#include<iostream>
using namespace std;
 
int main() {
    int n;
    cin <<n;
    
    if(n >= 100){
        n = n %100;
    }else if(n >= 10){
        n = n %10;
    }

    if(n == 2||n == 4|| n == 5 || n == 7 || n == 9){
        cout << "hon";
    }else if(n == 0|| n == 1 || n == 6 || n == 8){
        cout << "pon";
        
    }else if (n == 3){
        cout << "bon";
    }

}
   
