#include <iostream>
#include <string>
#include <vector>

using namespace std;

int N;

int main(){
    cin >> N;

    if(N >= 10 && 100 > N){
        N = N - (N / 10 * 10);
    }
    if(N >= 100){
        N = N - (N / 10 * 10);
    }

    string ans = "hon";
    if(N == 3){
        ans = "bon";
    }
    if(N == 0 || N == 1 || N == 6 || N == 8){
        ans = "pon";
    }

    cout << ans << endl;
}