#include <bits/stdc++.h>
using namespace std;
#define ll long long
int main()
{

    ll i,j,k,l,m,n,a,b,c,d,cnt=0;
    cin>>n;
    m=n%10;
    if(m==2 ||m==4 ||m==5 ||m==7|| m==9)
        cout<<"hon"<<endl;
    else if(m==0 || m==1 || m==6 || m==8)
        cout<<"pon"<<endl;
    else if(m==3)
        cout<<"bon"<<endl;

}
