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