import java.util.*;

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");
    	}
    }
}