import java.util.*;
public class Main {
	
	public static void main(String[] args){
		
		Integer[] calledPon = {0,1,6,8};
		
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int num = sc.nextInt()%10;

		if(num == 3) {
			System.out.println("bon");
		} else if (Arrays.asList(calledPon).contains(num)) {
			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