import java.util.*;
 
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();

		if(N % 10 == 3)
		System.out.println("bon");

		if(N % 10 == 2 || N % 10 == 4 || N % 10 == 5 || N % 10 == 7 || N % 10 == 9)
		System.out.println("hon");

		if(N % 10 == 0 || N % 10 == 1 || N % 10 == 6 || N % 10 == 8)
		System.out.println("pon");
	}
}