import java.util.Scanner;

public class Main {
  public static void main(String[] args) {
    Scanner in = new Scanner(System.in);
    int n = Integer.parseInt(in.nextLine());
    int rem = n%10;
    if (rem == 2 || rem == 4 || rem == 5 || rem == 7 || rem == 9) {
    	System.out.println("hon");
    } else if (rem == 0 || rem == 1 || rem == 6 || rem == 8) {
    	System.out.println("pon");
    } else {
    	System.out.println("bon");
    }
  }
}
/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