import java.util.*;
public class Main {
  public static void main(String[]args){
    Scanner in = new Scanner(System.in);
    int a = in.nextInt();
    int b = a%10;
    if(b==2||b==4||b==5||b==7||b==9){
      System.out.println("hon");
    }
    if(b==0||b==1||b==6||b==8){
      System.out.println("pon");
    }
    if(b==3){
      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