#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main() {
    string s;
    cin>>s;
    switch (s.back) {
        case '2':
        case '4':
        case '5':
        case '7':
        case '9':
        cout<<"hon"<<endl;
        break;
        case '0':
        case '1':
        case '6':
        case '8':
        cout<<"pon"<<endl;
        break;
        case '3':
        cout<<"bon"<<endl;
        break;
    }
    return 0;
}
