import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		int N = scanner.nextInt();
		int x;
		int amari;
		x =N/10;
		amari=N-(10*x);
		if(amari==2||amari==4||amari==5||amari==7||amari==9) {
			System.out.println("hon");
		}else if(amari==3) {
			System.out.println("bon");
		}else {
			System.out.println("pon");
		}
	}

}

/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