#include<bits/stdc++.h>

using namespace std;

typedef long long int ll;

void solve()
{
	int n;
	cin >> n;
	n = n % 10;
	if(n == 2 ||n == 4 ||n == 5 || n == 7 || n == 9) cout << "hon";
	else if(n = =0 || n == 1 || n == 6 || n  == 8) cout  << "pon";
	else cout << "bon";
}

int main()
{
	int t = 1;
//	cin >> t;
	while(t--)
	{
		solve();
	}
	return 0;
}

