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

int main()
{
ll i,n;
cin>>n;
n=n%10;
if(n==2||n==4||n==5||n==7||n==9)
    cout<<"hon";
else if(n==3)
    cout<<"bon";
else
    cout<<"pon";
}
