using System;
 
namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int N = Console.ReadLine();
			N = N % 100;
            N = N % 10;
          if(N == 2 || N == 4 || N == 5 || N == 7 || N == 9)
          {
			Console.Write("hon");          
          }
          if(N == 0 || N == 1 || N == 6 || N == 8)
          {
			Console.Write("pon");          
          }
          if(N == 3)
          {
			Console.Write("bon");          
          }
        }
    }
}
