import java.util.*;
public class Main {
	public static void main(String[] args){
    Scanner sc = new Scanner (System.in);
    int N = sc.nextInt();
    switch (int N%10){
      case 2:
      case 4:
      case 5:
      case 7:
      case 9:   
      	System.out.println("hon");
      	break;
      case 0:
      case 1:
      case 6:
      case 8:
        System.out.println("pon");
        break;
      case 3:
        System.out.println("bon");
    }
}