#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <functional>
#include <cmath>
#include <map>
#include <numeric>
using namespace std;

int main() {

	int n;
	cin >> n;

	switch (n % 10)
	{
	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 1:
		cout << "bon" << endl;
		break;
	}

	return 0;
}