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");          
          }
        }
    }
}