import java.util.Scanner;
public class Main {

	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");
	}
	if(((N%10)==0)||((N%10)==1)||((N%10)==6)||((N%10)==8)) {
		System.out.println("pon");
	}
	if(((N%10)==3)) {
		System.out.println("bon");
	}
	
	}

}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz