import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		String n = sc.next();
		
		int temp = n.length() - 1;
		
		if(n.charAt(temp) == '3') System.out.println("bon");
		else if(n.charAt(temp) == '0' || n.charAt(temp) == '1' || n.charAt(temp) == '6' || n.charAt(temp) == '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