#include<bots.stdc++.h>
using namespace std;

int main()
{
    int N;
    cin>>N;
    int d=N%10;
    if(N==2 || N==4 || N==5 || N==7 || N==9)
        cout<<"hon"<<endl;
    else if(N==0 || N==1 || N==6 || N==8)
        cout<<"pon"<<endl;
    else
        cout<<"bon"<<endl;

    return 0;    

}