#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for(int i = (s); i < (int)(n); i++)

int main(void)
{
    int n;
    cin >> n;

    int a=n/10;
    a*=10;
    n-=a;
    if(n==3){
        cout << "bon" << endl;
    }else if(n==0||n==1||n==6||n==8){
        cout << "pon" << endl;
    }else (
        cout << "hon" << endl;
    )

    return 0;

}