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

int main()
{
	string s;
	cin >> s;
	
	if(s[s.length()-1] == "2" || s[s.length()-1] == "4" || s[s.length()-1] == "5" || s[s.length()-1] == "7" || s[s.length()-1] == "9")
	{
		cout << "hon" << endl;
	} 
	else if(s[s.length()-1] == "0" || s[s.length()-1] == "1" || s[s.length()-1] == "6" || s[s.length()-1] == "8")
	{
		cout << "pon" << endl;
	} 
	else if(s[s.length()-1] == "3")
	{
		cout << "bon" << endl;
	}
	
	return 0;
}
