import java.util.Scanner;
class Main {
  public static void main(String[] args){
    Scanner scanner = new Scanner(System.in);
   int n;
    n = scanner.nextInt();
    if (n%10 == 3)
      System.out.println("bon");
    else if ((n%10==0)||(n%10==1)||(n%10==6)||(n%10==8))
      System.out.println("pon");
    else 
      System.out.println("hon");
    
  }         
}
