#include <iostream>
using namespace std;
int main(void){
    // Your code here!
    int n;
    cin >> n;
    n=n%10
    if (n==2||n==4||n==5||n==7||n==9){
        cout << "hon";
    }
    if (n==0||n==1||n==6||n==8){
        cout << "pon"
    }
    if (n==3){
        cout << "bon"
    }
}
