import java.util.*;
import java.io.*;
 
public class AtCoder{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        if(n%10 == 2 || n%10==4||n%10==5||n%10==7||n%10==9){
            System.out.println("hon");
        } else if(n%10==0||n%10==1||n%10==6||n%10==8){
            System.out.println("pon");
        } else{
            System.out.println("bon");
        }
    }
}