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