import java.util.*;

class Main {
    
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        
        int n = sc.nextInt();
        
        int rem = n % 10;
        
        if(rem == 2 || rem == 4 || rem == 5 || rem == 7 || rem == 9)
            System.out.println("hon");
        else if(rem == 3)
            System.out.println("bon");
        else
            System.out.println("pon");
    }
}
/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