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