import java.util.Scanner;
public class Main {
public static void main(final String[] args) {
    final Scanner scan = new Scanner(System.in);

    final int N = scan.nextInt();

    final int num = N % 10;
scan.close();
if((num==2) ||(num==4)||(num==5)||(num==7)||(num==9)){
    System.out.println("hon");
}else if((num==0)||(num==1)||(num==6)||(num==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