import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        // 数値の取得
        Scanner scn = new Scanner(System.in);
        int i = scn.nextInt();
        scn.close();
        
        //一の位の取得
        int x = i % 10;
        
        //一の位に応じた分岐
        if(x == 3) {
            System.out.println("bon");
        } else if(x == 2 || x == 4 || x == 5 || x == 7 || x == 9) {
            System.out.println("hon");
        } 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