#include<bits/stdc++.h>
using namespace std;

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

    return 0;

}