import java.util.*;
import java.lang.*;
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==8 ){
			System.out.println("pon");
		}else{
			System.out.println("hon");
		}
	}
}