#include <stdio.h>
using namespace std;

int main() {
    int n;
    cin >> n;
    if(n % 10 == 3){
        cout << "bon";
    }else if(n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8 ){
        cout << "pon";
    }else{
        cout << "hon";
    }
}