#include "bits/stdc++.h"

using namespace std;

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