import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String args[]) throws IOException {

	BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

	int N = Integer.parseInt(br.readLine());

	switch (N % 10) {
	case 0:
	case 1:
	case 6:
	case 8:
	    System.out.println("pon");
	    break;
	case 3:
	    System.out.println("bon");
	    break;
	default:
	    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