import java.util.*;
 
public class Main {
  public static void main(String[] arguments) {
    
    Scanner sc = new Scanner(System.in);
    String name = sc.next();
    int N = Integer.parseInt(name);
    int rem = N%10;
    
    if (rem == 3) System.out.println("bon");
    else if (rem == 0 || rem == 1 || rem == 6 || rem == 8) System.out.println("pon");
    else System.out.println("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