#include<iostream>
#include<sstream>
using namespace std;

int main(){
    int N;
    cin>>N;
    string S=to_string(N);
    char* a=S.back;
    switch(a[0]){
        case '2':;
        case '4':;
        case '5':;
        case '7':;
        case '9': cout<<"hon"<<endl;break;
        case '0':;
        case '1':;
        case '6':;
        case '8': cout<<"pon"<<endl;break;
        case '3': cout<<"bon"<<endl;break;

        return 0;
    }
}