import java.util.Scanner;
public class Main {
    public static void main(String args[]) {
    Scanner obj = new Scanner(System.in);   
    int n=obj.nextInt();
    int m=n%10;
    if(m==2||m==4||m==5||m==7||m==9)
    {
        System.out.print("hon");
    }
    else if(m==0||m==1||m==6||m==8)
    {
        System.out.print("pon");
    }
    else
    {
        System.out.print("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