import java.util.*;
class Main
{
  public static void main(String args[])
  {
    int N;
    Scanner in=new Scanner(System.in);
    N=in.nextInt();
    int i;
    i=N%10;
    if(i==3)
      System.out.println("bon");
    else if(i==2 ||i==4 ||i==5 ||i==7 ||i==9)
      System.out.println("hon");
    else 
      System.out.println("pon");
  }
}
    

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz