import java.util.*;
public class Main {
    public void solve() {
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        int A = N%10;
        if(A==3)System.out.println("bon");
        else if(A==0||A==1||A==6||A==8)System.out.println("pon");
        else System.out.println("hon");

    }
    public static void main(String[] args) {
        new Main().solve();
    }
    }
/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