import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        n%=100;
        n%=10;
        
        if(n==3)  System.out.println("bon");
        else if(n==0 || n==1 ||n==6 ||n==8) System.out.println("pon");
        else System.out.println("hon");
    }
}