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

int main(){
    int N;
    cin >> N;
    
    N %= 10

    if(N == 3){
        cout << "bon" << endl;
    }
    else if(N == 0 || N == 1 || N == 6 || N == 8){
        cout << "pon" << endl;
    }
    else{
        cout << "hon" << endl;
    }
}
