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

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