#include<bits/stdc++.h>
using namespace std;
int main(){
    int a;
    cin>>a;
    while(a>=10){
        a/=10;
    }
    if(a==3)cout<<"bon"<<endl;
    else if(a==0||a==1||a==6||a==8)cout<<"pon"<<endl;
    else cout<<"hon"<<endl;
}
