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));

	String N = br.readLine();

	if (N.endsWith("2") || N.endsWith("4") || N.endsWith("5") || N.endsWith("7") || N.endsWith("9")) {
	    System.out.println("hon");
	} else if (N.endsWith("0") || N.endsWith("1") || N.endsWith("6") || N.endsWith("8")) {
	    System.out.println("pon");
	} else {
	    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