//package atcoder;
 
import java.util.*;
 
public class Main{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		//int n = 0;
		if(N<10) {
			//int n = N;
			if(N==3) {
				System.out.println("bon");
			}
			if(N==0||N==1||N==6||N==8) {
				System.out.println("pon");
			}
			if(N==2||N==4||N==5||N==9||N==7) {
				System.out.println("hon");
			}
		}
		if(9<N) {
			int n = N%10;
			if(n==3) {
				System.out.println("bon");
			}
			if(n==0||n==1||n==6||n==8) {
				System.out.println("pon");
			}
			if(n==2||n==4||n==5||n==9) {
				System.out.println("hon");
			}
		}
		
		/*if(n==3) {
			System.out.println("bon");
		}
		if(n==0||n==1||n==6||n==8) {
			System.out.println("pon");
		}
		if(n==2||n==4||n==5||n==9) {
			System.out.println("hon");
		}*/
		
	}
}
/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