#include <bits/stdc++.h>

using namespace std;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    
    int n;
    cin >> n;
    
    if(n % 10 == 2 || n % 10 == 4 || n % 10 == 5 || n % 10 == 7 || n % 10 = 9)
        cout <<"hon";
    else
    if(n % 10 == 0 || n % 10 == 1 || n % 10 == 6 || n % 10 == 8)
    cout << "pon";
    else
    cout <<"bon";
    return 0;
}
