My Calendar III
<p>A <code>k</code>-booking happens when <code>k</code> events have some non-empty intersection (i.e., there is some time that is common to all <code>k</code> events.)</p>

<p>You are given some events <code>[startTime, endTime)</code>, after each given event, return an integer <code>k</code> representing the maximum <code>k</code>-booking between all the previous events.</p>

<p>Implement the <code>MyCalendarThree</code> class:</p>

<ul>
	<li><code>MyCalendarThree()</code> Initializes the object.</li>
	<li><code>int book(int startTime, int endTime)</code> Returns an integer <code>k</code> representing the largest integer such that there exists a <code>k</code>-booking in the calendar.</li>
</ul>

<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>

<pre>
<strong>Input</strong>
[&quot;MyCalendarThree&quot;, &quot;book&quot;, &quot;book&quot;, &quot;book&quot;, &quot;book&quot;, &quot;book&quot;, &quot;book&quot;]
[[], [10, 20], [50, 60], [10, 40], [5, 15], [5, 10], [25, 55]]
<strong>Output</strong>
[null, 1, 1, 2, 3, 3, 3]

<strong>Explanation</strong>
MyCalendarThree myCalendarThree = new MyCalendarThree();
myCalendarThree.book(10, 20); // return 1
myCalendarThree.book(50, 60); // return 1
myCalendarThree.book(10, 40); // return 2
myCalendarThree.book(5, 15); // return 3
myCalendarThree.book(5, 10); // return 3
myCalendarThree.book(25, 55); // return 3

</pre>

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>0 &lt;= startTime &lt; endTime &lt;= 10<sup>9</sup></code></li>
	<li>At most <code>400</code> calls will be made to <code>book</code>.</li>
</ul>

['my-calendar-i', 'my-calendar-ii', 'count-integers-in-intervals']
[]
[{"value": "cpp", "text": "C++", "defaultCode": "class MyCalendarThree {\npublic:\n    MyCalendarThree() {\n        \n    }\n    \n    int book(int startTime, int endTime) {\n        \n    }\n};\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * MyCalendarThree* obj = new MyCalendarThree();\n * int param_1 = obj->book(startTime,endTime);\n */"}, {"value": "java", "text": "Java", "defaultCode": "class MyCalendarThree {\n\n    public MyCalendarThree() {\n        \n    }\n    \n    public int book(int startTime, int endTime) {\n        \n    }\n}\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * MyCalendarThree obj = new MyCalendarThree();\n * int param_1 = obj.book(startTime,endTime);\n */"}, {"value": "python", "text": "Python", "defaultCode": "class MyCalendarThree(object):\n\n    def __init__(self):\n        \n\n    def book(self, startTime, endTime):\n        \"\"\"\n        :type startTime: int\n        :type endTime: int\n        :rtype: int\n        \"\"\"\n        \n\n\n# Your MyCalendarThree object will be instantiated and called as such:\n# obj = MyCalendarThree()\n# param_1 = obj.book(startTime,endTime)"}, {"value": "python3", "text": "Python3", "defaultCode": "class MyCalendarThree:\n\n    def __init__(self):\n        \n\n    def book(self, startTime: int, endTime: int) -> int:\n        \n\n\n# Your MyCalendarThree object will be instantiated and called as such:\n# obj = MyCalendarThree()\n# param_1 = obj.book(startTime,endTime)"}, {"value": "c", "text": "C", "defaultCode": "\n\n\ntypedef struct {\n    \n} MyCalendarThree;\n\n\nMyCalendarThree* myCalendarThreeCreate() {\n    \n}\n\nint myCalendarThreeBook(MyCalendarThree* obj, int startTime, int endTime) {\n    \n}\n\nvoid myCalendarThreeFree(MyCalendarThree* obj) {\n    \n}\n\n/**\n * Your MyCalendarThree struct will be instantiated and called as such:\n * MyCalendarThree* obj = myCalendarThreeCreate();\n * int param_1 = myCalendarThreeBook(obj, startTime, endTime);\n \n * myCalendarThreeFree(obj);\n*/"}, {"value": "csharp", "text": "C#", "defaultCode": "public class MyCalendarThree {\n\n    public MyCalendarThree() {\n        \n    }\n    \n    public int Book(int startTime, int endTime) {\n        \n    }\n}\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * MyCalendarThree obj = new MyCalendarThree();\n * int param_1 = obj.Book(startTime,endTime);\n */"}, {"value": "javascript", "text": "JavaScript", "defaultCode": "\nvar MyCalendarThree = function() {\n    \n};\n\n/** \n * @param {number} startTime \n * @param {number} endTime\n * @return {number}\n */\nMyCalendarThree.prototype.book = function(startTime, endTime) {\n    \n};\n\n/** \n * Your MyCalendarThree object will be instantiated and called as such:\n * var obj = new MyCalendarThree()\n * var param_1 = obj.book(startTime,endTime)\n */"}, {"value": "typescript", "text": "TypeScript", "defaultCode": "class MyCalendarThree {\n    constructor() {\n        \n    }\n\n    book(startTime: number, endTime: number): number {\n        \n    }\n}\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * var obj = new MyCalendarThree()\n * var param_1 = obj.book(startTime,endTime)\n */"}, {"value": "php", "text": "PHP", "defaultCode": "class MyCalendarThree {\n    /**\n     */\n    function __construct() {\n        \n    }\n  \n    /**\n     * @param Integer $startTime\n     * @param Integer $endTime\n     * @return Integer\n     */\n    function book($startTime, $endTime) {\n        \n    }\n}\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * $obj = MyCalendarThree();\n * $ret_1 = $obj->book($startTime, $endTime);\n */"}, {"value": "swift", "text": "Swift", "defaultCode": "\nclass MyCalendarThree {\n\n    init() {\n        \n    }\n    \n    func book(_ startTime: Int, _ endTime: Int) -> Int {\n        \n    }\n}\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * let obj = MyCalendarThree()\n * let ret_1: Int = obj.book(startTime, endTime)\n */"}, {"value": "kotlin", "text": "Kotlin", "defaultCode": "class MyCalendarThree() {\n\n    fun book(startTime: Int, endTime: Int): Int {\n        \n    }\n\n}\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * var obj = MyCalendarThree()\n * var param_1 = obj.book(startTime,endTime)\n */"}, {"value": "dart", "text": "Dart", "defaultCode": "class MyCalendarThree {\n\n  MyCalendarThree() {\n    \n  }\n  \n  int book(int startTime, int endTime) {\n    \n  }\n}\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * MyCalendarThree obj = MyCalendarThree();\n * int param1 = obj.book(startTime,endTime);\n */"}, {"value": "golang", "text": "Go", "defaultCode": "type MyCalendarThree struct {\n    \n}\n\n\nfunc Constructor() MyCalendarThree {\n    \n}\n\n\nfunc (this *MyCalendarThree) Book(startTime int, endTime int) int {\n    \n}\n\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * obj := Constructor();\n * param_1 := obj.Book(startTime,endTime);\n */"}, {"value": "ruby", "text": "Ruby", "defaultCode": "class MyCalendarThree\n    def initialize()\n        \n    end\n\n\n=begin\n    :type start_time: Integer\n    :type end_time: Integer\n    :rtype: Integer\n=end\n    def book(start_time, end_time)\n        \n    end\n\n\nend\n\n# Your MyCalendarThree object will be instantiated and called as such:\n# obj = MyCalendarThree.new()\n# param_1 = obj.book(start_time, end_time)"}, {"value": "scala", "text": "Scala", "defaultCode": "class MyCalendarThree() {\n\n    def book(startTime: Int, endTime: Int): Int = {\n        \n    }\n\n}\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * val obj = new MyCalendarThree()\n * val param_1 = obj.book(startTime,endTime)\n */"}, {"value": "rust", "text": "Rust", "defaultCode": "struct MyCalendarThree {\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 MyCalendarThree {\n\n    fn new() -> Self {\n        \n    }\n    \n    fn book(&self, start_time: i32, end_time: i32) -> i32 {\n        \n    }\n}\n\n/**\n * Your MyCalendarThree object will be instantiated and called as such:\n * let obj = MyCalendarThree::new();\n * let ret_1: i32 = obj.book(startTime, endTime);\n */"}, {"value": "racket", "text": "Racket", "defaultCode": "(define my-calendar-three%\n  (class object%\n    (super-new)\n    \n    (init-field)\n    \n    ; book : exact-integer? exact-integer? -> exact-integer?\n    (define/public (book start-time end-time)\n      )))\n\n;; Your my-calendar-three% object will be instantiated and called as such:\n;; (define obj (new my-calendar-three%))\n;; (define param_1 (send obj book start-time end-time))"}, {"value": "erlang", "text": "Erlang", "defaultCode": "-spec my_calendar_three_init_() -> any().\nmy_calendar_three_init_() ->\n  .\n\n-spec my_calendar_three_book(StartTime :: integer(), EndTime :: integer()) -> integer().\nmy_calendar_three_book(StartTime, EndTime) ->\n  .\n\n\n%% Your functions will be called as such:\n%% my_calendar_three_init_(),\n%% Param_1 = my_calendar_three_book(StartTime, EndTime),\n\n%% my_calendar_three_init_ will be called before every test case, in which you can do some necessary initializations."}, {"value": "elixir", "text": "Elixir", "defaultCode": "defmodule MyCalendarThree do\n  @spec init_() :: any\n  def init_() do\n    \n  end\n\n  @spec book(start_time :: integer, end_time :: integer) :: integer\n  def book(start_time, end_time) do\n    \n  end\nend\n\n# Your functions will be called as such:\n# MyCalendarThree.init_()\n# param_1 = MyCalendarThree.book(start_time, end_time)\n\n# MyCalendarThree.init_ will be called before every test case, in which you can do some necessary initializations."}]
{
  "classname": "MyCalendarThree",
  "constructor": {
    "params": []
  },
  "methods": [
    {
      "name": "book",
      "params": [
        {
          "type": "integer",
          "name": "startTime"
        },
        {
          "type": "integer",
          "name": "endTime"
        }
      ],
      "return": {
        "type": "integer"
      }
    }
  ],
  "systemdesign": true,
  "params": [
    {
      "name": "starts",
      "type": "integer[]"
    },
    {
      "name": "ends",
      "type": "integer[]"
    }
  ],
  "return": {
    "type": "list<boolean>",
    "dealloc": true
  }
}
{"cpp": ["C++", "<p>Compiled with <code> clang 19 </code> using the latest C++ 23 standard, and <code>libstdc++</code> provided by GCC 14.</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 21</code>. Using compile arguments: <code>--enable-preview --release 21</code></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 2.7.18</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\">is not maintained anymore</a>. For the latest Python, please choose Python3 instead.</p>"], "c": ["C", "<p>Compiled with <code>gcc 14</code> using the gnu11 standard.</p>\r\n\r\n<p>Your code is compiled with level one 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>\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-13\" target=\"_blank\">C# 13</a> with .NET 9 runtime</p>"], "javascript": ["JavaScript", "<p><code>Node.js 22.14.0</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 6.3.2 version of <a href=\"https://github.com/datastructures-js/priority-queue/tree/v6.3.2\" target=\"_blank\">datastructures-js/priority-queue</a> and 4.2.3 version of <a href=\"https://github.com/datastructures-js/queue/tree/v4.2.3\" target=\"_blank\">datastructures-js/queue</a> and 1.0.4 version of <a href=\"https://github.com/datastructures-js/deque/tree/v1.0.4\" target=\"_blank\">datastructures-js/deque</a>.</p>"], "ruby": ["Ruby", "<p><code>Ruby 3.2</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 6.0</code>.</p>\r\n\r\n<p>You may use the following packages:<br/>\r\n<a href=\"https://github.com/apple/swift-algorithms/tree/1.2.0\" target=\"_blank\">swift-algorithms 1.2.0</a><br/>\r\n<a href=\"https://github.com/apple/swift-collections/tree/1.1.4\" target=\"_blank\">swift-collections 1.1.4</a><br/>\r\n<a href=\"https://github.com/apple/swift-numerics/tree/1.0.2\" target=\"_blank\">swift-numerics 1.0.2</a></p>"], "golang": ["Go", "<p><code>Go 1.23</code></p>\r\n<p>Support <a href=\"https://pkg.go.dev/github.com/emirpasic/gods@v1.18.1\" target=\"_blank\">https://pkg.go.dev/github.com/emirpasic/gods@v1.18.1</a> and <a href=\"https://pkg.go.dev/github.com/emirpasic/gods/v2@v2.0.0-alpha\" target=\"_blank\">https://pkg.go.dev/github.com/emirpasic/gods/v2@v2.0.0-alpha</a> library.</p>"], "python3": ["Python3", "<p><code>Python 3.11</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 3.3.1</code>.</p>"], "kotlin": ["Kotlin", "<p><code>Kotlin 2.1.10</code>.</p>"], "rust": ["Rust", "<p><code>Rust 1.85.0</code>. Your code will be compiled with <code>opt-level</code> 2.</p>\r\n\r\n<p>Supports <a href=\"https://crates.io/crates/rand\" target=\"_blank\">rand v0.8</a> and <a href=\"https://crates.io/crates/regex\" target=\"_blank\">regex\u00a0v1</a> and <a href=\"https://crates.io/crates/itertools\" target=\"_blank\">itertools\u00a0v0.14</a> from crates.io</p>"], "php": ["PHP", "<p><code>PHP 8.2</code>.</p>\r\n<p>With bcmath module</p>"], "typescript": ["Typescript", "<p><code>TypeScript 5.7.3, Node.js 22.14.0</code>.</p>\r\n\r\n<p>Compile Options: <code>--alwaysStrict --strictBindCallApply --strictFunctionTypes --target ES2024</code></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 6.3.2 version of <a href=\"https://github.com/datastructures-js/priority-queue/tree/v6.3.2\" target=\"_blank\">datastructures-js/priority-queue</a> and 4.2.3 version of <a href=\"https://github.com/datastructures-js/queue/tree/v4.2.3\" target=\"_blank\">datastructures-js/queue</a> and 1.0.4 version of <a href=\"https://github.com/datastructures-js/deque/tree/v1.0.4\" target=\"_blank\">datastructures-js/deque</a>.</p>"], "racket": ["Racket", "<p><a href=\"https://docs.racket-lang.org/guide/performance.html#%28tech._c%29\" target=\"_blank\">Racket CS</a> v8.15</p>\r\n\r\n<p>Using <code>#lang racket</code></p>\r\n\r\n<p>Required <code>data/gvector data/queue data/order data/heap</code> automatically for your convenience</p>"], "erlang": ["Erlang", "Erlang/OTP 26"], "elixir": ["Elixir", "Elixir 1.17 with Erlang/OTP 26"], "dart": ["Dart", "<p>Dart 3.2. You may use package <a href=\"https://pub.dev/packages/collection/versions/1.18.0\" target=\"_blank\">collection</a></p>\r\n\r\n<p>Your code will be run directly without compiling</p>"]}
['Binary Search', 'Design', 'Segment Tree', 'Prefix Sum', 'Ordered Set']