#include <iostream>
using namespace std;
int main()
{
	
	int n;
	cin >> n;
	if(n%10==2||n%10==4||n%10==5||n%10==7||n%10==9)
		cout << "hon";
	else if(n%10==0||n%10==1||n%10==6||n%10==8)
		cout << "pon"
	else
	cout << "bon"
	return 0;
}
