#include<bits/stdc++.h>
#define int long long 
#define mod 1000000007 
using namespace std ;

int main()
{
	
	int n;
	cin>>n;
	int r=n%10;
	if(r==2||r==4||r==5||r==7||r==9)
	cout<<"hon";
	if(r==0|| r==1||r==6||r==8)
	cout<<"pon";
	if(r==3)
	cout<<"bon";
	return 0;


}