package com.huawei;

//import java.util.Random;

import java.util.ArrayList;

import java.util.Scanner;

public class Main3 {

public static void main(String[] args) {

Scanner in = new Scanner(System.in);

String s = in.nextLine();

ArrayList<Object> list = new ArrayList<>();

for (int i = 0; i < s.length(); i++) {

if (s.charAt(i) - '0' >= 1 && s.charAt(i) - '0' < 10) {

list.add(s.charAt(i) - '0');

}

else if (s.charAt(i) == 'n') {

list.add("null");

i += 2;

}

}

System.out.println(list);

ArrayList<Integer> ll = new ArrayList<>();

for (int i = 0; i < list.size(); i++) {

if ((Integer)list.get(i) > 10) ll.add(0);

else ll.add((Integer)list.get(i));

}

System.out.println(ll);

TreeNode root = null;

for (int i = 0; 2 * i + 2 < list.size(); i++) {

TreeNode cur = new TreeNode((Integer) list.get(i));

if (i == 0);

}

}

}

class TreeNode {

int val;

TreeNode left;

TreeNode right;

public TreeNode () {}

public TreeNode (int val) {

this.val = val;

}

}