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

int main(){
    int N, a;
    cin >> N;
	a = N % 10;
    if(a == 0 || a == 1 || a == 6 || a == 8){
        cout << "pon" <<endl;
    }else if(a == 3){
        cout << "bon" <<endl;
    }else{
      cout << "hon" <<endl;
}