import java.util.Scanner;
import java.util.Arrays;
class Main{
  public static void main(String[] args){
    Scanner scan = new Scanner(System.in);
    int N = scan.nextInt();
    if (N % 10 == 3) {
      System.out.println("bon");
    }
    else if (N % 10 == 0 || N % 10 == 1 || N % 10 == 6 || N % 10 == 8) {
      System.out.println("pon");
    }
    else{
      System.out.println("hon");
    }
    
  }
}

