{
    "data": {
        "question": {
            "questionId": "2413",
            "questionFrontendId": "2336",
            "boundTopicId": null,
            "title": "Smallest Number in Infinite Set",
            "titleSlug": "smallest-number-in-infinite-set",
            "content": "<p>You have a set which contains all positive integers <code>[1, 2, 3, 4, 5, ...]</code>.</p>\n\n<p>Implement the <code>SmallestInfiniteSet</code> class:</p>\n\n<ul>\n\t<li><code>SmallestInfiniteSet()</code> Initializes the <strong>SmallestInfiniteSet</strong> object to contain <strong>all</strong> positive integers.</li>\n\t<li><code>int popSmallest()</code> <strong>Removes</strong> and returns the smallest integer contained in the infinite set.</li>\n\t<li><code>void addBack(int num)</code> <strong>Adds</strong> a positive integer <code>num</code> back into the infinite set, if it is <strong>not</strong> already in the infinite set.</li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input</strong>\n[&quot;SmallestInfiniteSet&quot;, &quot;addBack&quot;, &quot;popSmallest&quot;, &quot;popSmallest&quot;, &quot;popSmallest&quot;, &quot;addBack&quot;, &quot;popSmallest&quot;, &quot;popSmallest&quot;, &quot;popSmallest&quot;]\n[[], [2], [], [], [], [1], [], [], []]\n<strong>Output</strong>\n[null, null, 1, 2, 3, null, 1, 4, 5]\n\n<strong>Explanation</strong>\nSmallestInfiniteSet smallestInfiniteSet = new SmallestInfiniteSet();\nsmallestInfiniteSet.addBack(2);    // 2 is already in the set, so no change is made.\nsmallestInfiniteSet.popSmallest(); // return 1, since 1 is the smallest number, and remove it from the set.\nsmallestInfiniteSet.popSmallest(); // return 2, and remove it from the set.\nsmallestInfiniteSet.popSmallest(); // return 3, and remove it from the set.\nsmallestInfiniteSet.addBack(1);    // 1 is added back to the set.\nsmallestInfiniteSet.popSmallest(); // return 1, since 1 was added back to the set and\n                                   // is the smallest number, and remove it from the set.\nsmallestInfiniteSet.popSmallest(); // return 4, and remove it from the set.\nsmallestInfiniteSet.popSmallest(); // return 5, and remove it from the set.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= num &lt;= 1000</code></li>\n\t<li>At most <code>1000</code> calls will be made <strong>in total</strong> to <code>popSmallest</code> and <code>addBack</code>.</li>\n</ul>\n",
            "translatedTitle": null,
            "translatedContent": null,
            "isPaidOnly": false,
            "difficulty": "Medium",
            "likes": 1521,
            "dislikes": 163,
            "isLiked": null,
            "similarQuestions": "[{\"title\": \"First Missing Positive\", \"titleSlug\": \"first-missing-positive\", \"difficulty\": \"Hard\", \"translatedTitle\": null}]",
            "exampleTestcases": "[\"SmallestInfiniteSet\",\"addBack\",\"popSmallest\",\"popSmallest\",\"popSmallest\",\"addBack\",\"popSmallest\",\"popSmallest\",\"popSmallest\"]\n[[],[2],[],[],[],[1],[],[],[]]",
            "categoryTitle": "Algorithms",
            "contributors": [],
            "topicTags": [
                {
                    "name": "Hash Table",
                    "slug": "hash-table",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Design",
                    "slug": "design",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Heap (Priority Queue)",
                    "slug": "heap-priority-queue",
                    "translatedName": null,
                    "__typename": "TopicTagNode"
                }
            ],
            "companyTagStats": null,
            "codeSnippets": [
                {
                    "lang": "C++",
                    "langSlug": "cpp",
                    "code": "class SmallestInfiniteSet {\npublic:\n    SmallestInfiniteSet() {\n        \n    }\n    \n    int popSmallest() {\n        \n    }\n    \n    void addBack(int num) {\n        \n    }\n};\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * SmallestInfiniteSet* obj = new SmallestInfiniteSet();\n * int param_1 = obj->popSmallest();\n * obj->addBack(num);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Java",
                    "langSlug": "java",
                    "code": "class SmallestInfiniteSet {\n\n    public SmallestInfiniteSet() {\n        \n    }\n    \n    public int popSmallest() {\n        \n    }\n    \n    public void addBack(int num) {\n        \n    }\n}\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * SmallestInfiniteSet obj = new SmallestInfiniteSet();\n * int param_1 = obj.popSmallest();\n * obj.addBack(num);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python",
                    "langSlug": "python",
                    "code": "class SmallestInfiniteSet(object):\n\n    def __init__(self):\n        \n\n    def popSmallest(self):\n        \"\"\"\n        :rtype: int\n        \"\"\"\n        \n\n    def addBack(self, num):\n        \"\"\"\n        :type num: int\n        :rtype: None\n        \"\"\"\n        \n\n\n# Your SmallestInfiniteSet object will be instantiated and called as such:\n# obj = SmallestInfiniteSet()\n# param_1 = obj.popSmallest()\n# obj.addBack(num)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python3",
                    "langSlug": "python3",
                    "code": "class SmallestInfiniteSet:\n\n    def __init__(self):\n        \n\n    def popSmallest(self) -> int:\n        \n\n    def addBack(self, num: int) -> None:\n        \n\n\n# Your SmallestInfiniteSet object will be instantiated and called as such:\n# obj = SmallestInfiniteSet()\n# param_1 = obj.popSmallest()\n# obj.addBack(num)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C",
                    "langSlug": "c",
                    "code": "\n\n\ntypedef struct {\n    \n} SmallestInfiniteSet;\n\n\nSmallestInfiniteSet* smallestInfiniteSetCreate() {\n    \n}\n\nint smallestInfiniteSetPopSmallest(SmallestInfiniteSet* obj) {\n    \n}\n\nvoid smallestInfiniteSetAddBack(SmallestInfiniteSet* obj, int num) {\n    \n}\n\nvoid smallestInfiniteSetFree(SmallestInfiniteSet* obj) {\n    \n}\n\n/**\n * Your SmallestInfiniteSet struct will be instantiated and called as such:\n * SmallestInfiniteSet* obj = smallestInfiniteSetCreate();\n * int param_1 = smallestInfiniteSetPopSmallest(obj);\n \n * smallestInfiniteSetAddBack(obj, num);\n \n * smallestInfiniteSetFree(obj);\n*/",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C#",
                    "langSlug": "csharp",
                    "code": "public class SmallestInfiniteSet {\n\n    public SmallestInfiniteSet() {\n        \n    }\n    \n    public int PopSmallest() {\n        \n    }\n    \n    public void AddBack(int num) {\n        \n    }\n}\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * SmallestInfiniteSet obj = new SmallestInfiniteSet();\n * int param_1 = obj.PopSmallest();\n * obj.AddBack(num);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "\nvar SmallestInfiniteSet = function() {\n    \n};\n\n/**\n * @return {number}\n */\nSmallestInfiniteSet.prototype.popSmallest = function() {\n    \n};\n\n/** \n * @param {number} num\n * @return {void}\n */\nSmallestInfiniteSet.prototype.addBack = function(num) {\n    \n};\n\n/** \n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * var obj = new SmallestInfiniteSet()\n * var param_1 = obj.popSmallest()\n * obj.addBack(num)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "class SmallestInfiniteSet {\n    constructor() {\n        \n    }\n\n    popSmallest(): number {\n        \n    }\n\n    addBack(num: number): void {\n        \n    }\n}\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * var obj = new SmallestInfiniteSet()\n * var param_1 = obj.popSmallest()\n * obj.addBack(num)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "PHP",
                    "langSlug": "php",
                    "code": "class SmallestInfiniteSet {\n    /**\n     */\n    function __construct() {\n        \n    }\n  \n    /**\n     * @return Integer\n     */\n    function popSmallest() {\n        \n    }\n  \n    /**\n     * @param Integer $num\n     * @return NULL\n     */\n    function addBack($num) {\n        \n    }\n}\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * $obj = SmallestInfiniteSet();\n * $ret_1 = $obj->popSmallest();\n * $obj->addBack($num);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Swift",
                    "langSlug": "swift",
                    "code": "\nclass SmallestInfiniteSet {\n\n    init() {\n        \n    }\n    \n    func popSmallest() -> Int {\n        \n    }\n    \n    func addBack(_ num: Int) {\n        \n    }\n}\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * let obj = SmallestInfiniteSet()\n * let ret_1: Int = obj.popSmallest()\n * obj.addBack(num)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Kotlin",
                    "langSlug": "kotlin",
                    "code": "class SmallestInfiniteSet() {\n\n    fun popSmallest(): Int {\n        \n    }\n\n    fun addBack(num: Int) {\n        \n    }\n\n}\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * var obj = SmallestInfiniteSet()\n * var param_1 = obj.popSmallest()\n * obj.addBack(num)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Dart",
                    "langSlug": "dart",
                    "code": "class SmallestInfiniteSet {\n\n  SmallestInfiniteSet() {\n    \n  }\n  \n  int popSmallest() {\n    \n  }\n  \n  void addBack(int num) {\n    \n  }\n}\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * SmallestInfiniteSet obj = SmallestInfiniteSet();\n * int param1 = obj.popSmallest();\n * obj.addBack(num);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "type SmallestInfiniteSet struct {\n    \n}\n\n\nfunc Constructor() SmallestInfiniteSet {\n    \n}\n\n\nfunc (this *SmallestInfiniteSet) PopSmallest() int {\n    \n}\n\n\nfunc (this *SmallestInfiniteSet) AddBack(num int)  {\n    \n}\n\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * obj := Constructor();\n * param_1 := obj.PopSmallest();\n * obj.AddBack(num);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Ruby",
                    "langSlug": "ruby",
                    "code": "class SmallestInfiniteSet\n    def initialize()\n        \n    end\n\n\n=begin\n    :rtype: Integer\n=end\n    def pop_smallest()\n        \n    end\n\n\n=begin\n    :type num: Integer\n    :rtype: Void\n=end\n    def add_back(num)\n        \n    end\n\n\nend\n\n# Your SmallestInfiniteSet object will be instantiated and called as such:\n# obj = SmallestInfiniteSet.new()\n# param_1 = obj.pop_smallest()\n# obj.add_back(num)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Scala",
                    "langSlug": "scala",
                    "code": "class SmallestInfiniteSet() {\n\n    def popSmallest(): Int = {\n        \n    }\n\n    def addBack(num: Int) {\n        \n    }\n\n}\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * var obj = new SmallestInfiniteSet()\n * var param_1 = obj.popSmallest()\n * obj.addBack(num)\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Rust",
                    "langSlug": "rust",
                    "code": "struct SmallestInfiniteSet {\n\n}\n\n\n/** \n * `&self` means the method takes an immutable reference.\n * If you need a mutable reference, change it to `&mut self` instead.\n */\nimpl SmallestInfiniteSet {\n\n    fn new() -> Self {\n        \n    }\n    \n    fn pop_smallest(&self) -> i32 {\n        \n    }\n    \n    fn add_back(&self, num: i32) {\n        \n    }\n}\n\n/**\n * Your SmallestInfiniteSet object will be instantiated and called as such:\n * let obj = SmallestInfiniteSet::new();\n * let ret_1: i32 = obj.pop_smallest();\n * obj.add_back(num);\n */",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Racket",
                    "langSlug": "racket",
                    "code": "(define smallest-infinite-set%\n  (class object%\n    (super-new)\n    \n    (init-field)\n    \n    ; pop-smallest : -> exact-integer?\n    (define/public (pop-smallest)\n      )\n    ; add-back : exact-integer? -> void?\n    (define/public (add-back num)\n      )))\n\n;; Your smallest-infinite-set% object will be instantiated and called as such:\n;; (define obj (new smallest-infinite-set%))\n;; (define param_1 (send obj pop-smallest))\n;; (send obj add-back num)",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Erlang",
                    "langSlug": "erlang",
                    "code": "-spec smallest_infinite_set_init_() -> any().\nsmallest_infinite_set_init_() ->\n  .\n\n-spec smallest_infinite_set_pop_smallest() -> integer().\nsmallest_infinite_set_pop_smallest() ->\n  .\n\n-spec smallest_infinite_set_add_back(Num :: integer()) -> any().\nsmallest_infinite_set_add_back(Num) ->\n  .\n\n\n%% Your functions will be called as such:\n%% smallest_infinite_set_init_(),\n%% Param_1 = smallest_infinite_set_pop_smallest(),\n%% smallest_infinite_set_add_back(Num),\n\n%% smallest_infinite_set_init_ will be called before every test case, in which you can do some necessary initializations.",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Elixir",
                    "langSlug": "elixir",
                    "code": "defmodule SmallestInfiniteSet do\n  @spec init_() :: any\n  def init_() do\n    \n  end\n\n  @spec pop_smallest() :: integer\n  def pop_smallest() do\n    \n  end\n\n  @spec add_back(num :: integer) :: any\n  def add_back(num) do\n    \n  end\nend\n\n# Your functions will be called as such:\n# SmallestInfiniteSet.init_()\n# param_1 = SmallestInfiniteSet.pop_smallest()\n# SmallestInfiniteSet.add_back(num)\n\n# SmallestInfiniteSet.init_ will be called before every test case, in which you can do some necessary initializations.",
                    "__typename": "CodeSnippetNode"
                }
            ],
            "stats": "{\"totalAccepted\": \"110.8K\", \"totalSubmission\": \"152.2K\", \"totalAcceptedRaw\": 110828, \"totalSubmissionRaw\": 152222, \"acRate\": \"72.8%\"}",
            "hints": [
                "Based on the constraints, what is the maximum element that can possibly be popped?",
                "Maintain whether elements are in or not in the set. How many elements do we consider?"
            ],
            "solution": {
                "id": "1802",
                "canSeeDetail": false,
                "paidOnly": true,
                "hasVideoSolution": false,
                "paidOnlyVideo": true,
                "__typename": "ArticleNode"
            },
            "status": null,
            "sampleTestCase": "[\"SmallestInfiniteSet\",\"addBack\",\"popSmallest\",\"popSmallest\",\"popSmallest\",\"addBack\",\"popSmallest\",\"popSmallest\",\"popSmallest\"]\n[[],[2],[],[],[],[1],[],[],[]]",
            "metaData": "{\n  \"classname\": \"SmallestInfiniteSet\",\n  \"constructor\": {\n    \"params\": []\n  },\n  \"methods\": [\n    {\n      \"params\": [],\n      \"name\": \"popSmallest\",\n      \"return\": {\n        \"type\": \"integer\"\n      }\n    },\n    {\n      \"params\": [\n        {\n          \"type\": \"integer\",\n          \"name\": \"num\"\n        }\n      ],\n      \"name\": \"addBack\",\n      \"return\": {\n        \"type\": \"void\"\n      }\n    }\n  ],\n  \"return\": {\n    \"type\": \"boolean\"\n  },\n  \"systemdesign\": true\n}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [],
            "enableRunCode": true,
            "enableTestMode": false,
            "enableDebugger": true,
            "envInfo": "{\"cpp\": [\"C++\", \"<p>Compiled with <code> clang 11 </code> using the latest C++ 20 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level two optimization (<code>-O2</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\"], \"java\": [\"Java\", \"<p><code>OpenJDK 17</code>. Java 8 features such as lambda expressions and stream API can be used. </p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n<p>Includes <code>Pair</code> class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.</p>\"], \"python\": [\"Python\", \"<p><code>Python 2.7.12</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\\\"https://docs.python.org/2/library/array.html\\\" target=\\\"_blank\\\">array</a>, <a href=\\\"https://docs.python.org/2/library/bisect.html\\\" target=\\\"_blank\\\">bisect</a>, <a href=\\\"https://docs.python.org/2/library/collections.html\\\" target=\\\"_blank\\\">collections</a>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\\r\\n\\r\\n<p>Note that Python 2.7 <a href=\\\"https://www.python.org/dev/peps/pep-0373/\\\" target=\\\"_blank\\\">will not be maintained past 2020</a>. For the latest Python, please choose Python3 instead.</p>\"], \"c\": [\"C\", \"<p>Compiled with <code>gcc 8.2</code> using the gnu11 standard.</p>\\r\\n\\r\\n<p>Your code is compiled with level one optimization (<code>-O1</code>). <a href=\\\"https://github.com/google/sanitizers/wiki/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\\r\\n\\r\\n<p>Most standard library headers are already included automatically for your convenience.</p>\\r\\n\\r\\n<p>For hash table operations, you may use <a href=\\\"https://troydhanson.github.io/uthash/\\\" target=\\\"_blank\\\">uthash</a>. \\\"uthash.h\\\" is included by default. Below are some examples:</p>\\r\\n\\r\\n<p><b>1. Adding an item to a hash.</b>\\r\\n<pre>\\r\\nstruct hash_entry {\\r\\n    int id;            /* we'll use this field as the key */\\r\\n    char name[10];\\r\\n    UT_hash_handle hh; /* makes this structure hashable */\\r\\n};\\r\\n\\r\\nstruct hash_entry *users = NULL;\\r\\n\\r\\nvoid add_user(struct hash_entry *s) {\\r\\n    HASH_ADD_INT(users, id, s);\\r\\n}\\r\\n</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>2. Looking up an item in a hash:</b>\\r\\n<pre>\\r\\nstruct hash_entry *find_user(int user_id) {\\r\\n    struct hash_entry *s;\\r\\n    HASH_FIND_INT(users, &user_id, s);\\r\\n    return s;\\r\\n}\\r\\n</pre>\\r\\n</p>\\r\\n\\r\\n<p><b>3. Deleting an item in a hash:</b>\\r\\n<pre>\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n    HASH_DEL(users, user);  \\r\\n}\\r\\n</pre>\\r\\n</p>\"], \"csharp\": [\"C#\", \"<p><a href=\\\"https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-10\\\" target=\\\"_blank\\\">C# 10 with .NET 6 runtime</a></p>\"], \"javascript\": [\"JavaScript\", \"<p><code>Node.js 16.13.2</code>.</p>\\r\\n\\r\\n<p>Your code is run with <code>--harmony</code> flag, enabling <a href=\\\"http://node.green/\\\" target=\\\"_blank\\\">new ES6 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\\r\\n\\r\\n<p>For Priority Queue / Queue data structures, you may use 5.3.0 version of <a href=\\\"https://github.com/datastructures-js/priority-queue/tree/fb4fdb984834421279aeb081df7af624d17c2a03\\\" target=\\\"_blank\\\">datastructures-js/priority-queue</a> and 4.2.1 version of <a href=\\\"https://github.com/datastructures-js/queue/tree/e63563025a5a805aa16928cb53bcd517bfea9230\\\" target=\\\"_blank\\\">datastructures-js/queue</a>.</p>\"], \"ruby\": [\"Ruby\", \"<p><code>Ruby 3.1</code></p>\\r\\n\\r\\n<p>Some common data structure implementations are provided in the Algorithms module: https://www.rubydoc.info/github/kanwei/algorithms/Algorithms</p>\"], \"swift\": [\"Swift\", \"<p><code>Swift 5.5.2</code>.</p>\"], \"golang\": [\"Go\", \"<p><code>Go 1.21</code></p>\\r\\n<p>Support <a href=\\\"https://github.com/emirpasic/gods/tree/v1.18.1\\\" target=\\\"_blank\\\">https://godoc.org/github.com/emirpasic/gods@v1.18.1</a> library.</p>\"], \"python3\": [\"Python3\", \"<p><code>Python 3.10</code>.</p>\\r\\n\\r\\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\\\"https://docs.python.org/3/library/array.html\\\" target=\\\"_blank\\\">array</a>, <a href=\\\"https://docs.python.org/3/library/bisect.html\\\" target=\\\"_blank\\\">bisect</a>, <a href=\\\"https://docs.python.org/3/library/collections.html\\\" target=\\\"_blank\\\">collections</a>. If you need more libraries, you can import it yourself.</p>\\r\\n\\r\\n<p>For Map/TreeMap data structure, you may use <a href=\\\"http://www.grantjenks.com/docs/sortedcontainers/\\\" target=\\\"_blank\\\">sortedcontainers</a> library.</p>\"], \"scala\": [\"Scala\", \"<p><code>Scala 2.13.7</code>.</p>\"], \"kotlin\": [\"Kotlin\", \"<p><code>Kotlin 1.9.0</code>.</p>\"], \"rust\": [\"Rust\", \"<p><code>Rust 1.58.1</code></p>\\r\\n\\r\\n<p>Supports <a href=\\\"https://crates.io/crates/rand\\\" target=\\\"_blank\\\">rand </a> v0.6\\u00a0from crates.io</p>\"], \"php\": [\"PHP\", \"<p><code>PHP 8.1</code>.</p>\\r\\n<p>With bcmath module</p>\"], \"typescript\": [\"Typescript\", \"<p><code>TypeScript 5.1.6, Node.js 16.13.2</code>.</p>\\r\\n\\r\\n<p>Your code is run with <code>--harmony</code> flag, enabling <a href=\\\"http://node.green/\\\" target=\\\"_blank\\\">new ES2022 features</a>.</p>\\r\\n\\r\\n<p><a href=\\\"https://lodash.com\\\" target=\\\"_blank\\\">lodash.js</a> library is included by default.</p>\"], \"racket\": [\"Racket\", \"<p>Run with <code>Racket 8.3</code>.</p>\"], \"erlang\": [\"Erlang\", \"Erlang/OTP 25.0\"], \"elixir\": [\"Elixir\", \"Elixir 1.13.4 with Erlang/OTP 25.0\"], \"dart\": [\"Dart\", \"<p>Dart 2.17.3</p>\\r\\n\\r\\n<p>Your code will be run directly without compiling</p>\"]}",
            "libraryUrl": null,
            "adminUrl": null,
            "challengeQuestion": {
                "id": "1313",
                "date": "2023-04-25",
                "incompleteChallengeCount": 0,
                "streakCount": 0,
                "type": "DAILY",
                "__typename": "ChallengeQuestionNode"
            },
            "__typename": "QuestionNode"
        }
    }
}