leetcode-problemset/leetcode-cn/originData/maximize-amount-after-two-days-of-conversions.json

{
    "data": {
        "question": {
            "questionId": "3613",
            "questionFrontendId": "3387",
            "categoryTitle": "Algorithms",
            "boundTopicId": 3019823,
            "title": "Maximize Amount After Two Days of Conversions",
            "titleSlug": "maximize-amount-after-two-days-of-conversions",
            "content": "<p>You are given a string <code>initialCurrency</code>, and you start with <code>1.0</code> of <code>initialCurrency</code>.</p>\n\n<p>You are also given four arrays with currency pairs (strings) and rates (real numbers):</p>\n\n<ul>\n\t<li><code>pairs1[i] = [startCurrency<sub>i</sub>, targetCurrency<sub>i</sub>]</code> denotes that you can convert from <code>startCurrency<sub>i</sub></code> to <code>targetCurrency<sub>i</sub></code> at a rate of <code>rates1[i]</code> on <strong>day 1</strong>.</li>\n\t<li><code>pairs2[i] = [startCurrency<sub>i</sub>, targetCurrency<sub>i</sub>]</code> denotes that you can convert from <code>startCurrency<sub>i</sub></code> to <code>targetCurrency<sub>i</sub></code> at a rate of <code>rates2[i]</code> on <strong>day 2</strong>.</li>\n\t<li>Also, each <code>targetCurrency</code> can be converted back to its corresponding <code>startCurrency</code> at a rate of <code>1 / rate</code>.</li>\n</ul>\n\n<p>You can perform <strong>any</strong> number of conversions, <strong>including zero</strong>, using <code>rates1</code> on day 1, <strong>followed</strong> by any number of additional conversions, <strong>including zero</strong>, using <code>rates2</code> on day 2.</p>\n\n<p>Return the <strong>maximum</strong> amount of <code>initialCurrency</code> you can have after performing any number of conversions on both days <strong>in order</strong>.</p>\n\n<p><strong>Note: </strong>Conversion rates are valid, and there will be no contradictions in the rates for either day. The rates for the days are independent of each other.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">initialCurrency = &quot;EUR&quot;, pairs1 = [[&quot;EUR&quot;,&quot;USD&quot;],[&quot;USD&quot;,&quot;JPY&quot;]], rates1 = [2.0,3.0], pairs2 = [[&quot;JPY&quot;,&quot;USD&quot;],[&quot;USD&quot;,&quot;CHF&quot;],[&quot;CHF&quot;,&quot;EUR&quot;]], rates2 = [4.0,5.0,6.0]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">720.00000</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>To get the maximum amount of <strong>EUR</strong>, starting with 1.0 <strong>EUR</strong>:</p>\n\n<ul>\n\t<li>On Day 1:\n\t<ul>\n\t\t<li>Convert <strong>EUR </strong>to <strong>USD</strong> to get 2.0 <strong>USD</strong>.</li>\n\t\t<li>Convert <strong>USD</strong> to <strong>JPY</strong> to get 6.0 <strong>JPY</strong>.</li>\n\t</ul>\n\t</li>\n\t<li>On Day 2:\n\t<ul>\n\t\t<li>Convert <strong>JPY</strong> to <strong>USD</strong> to get 24.0 <strong>USD</strong>.</li>\n\t\t<li>Convert <strong>USD</strong> to <strong>CHF</strong> to get 120.0 <strong>CHF</strong>.</li>\n\t\t<li>Finally, convert <strong>CHF</strong> to <strong>EUR</strong> to get 720.0 <strong>EUR</strong>.</li>\n\t</ul>\n\t</li>\n</ul>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">initialCurrency = &quot;NGN&quot;, pairs1 = </span>[[&quot;NGN&quot;,&quot;EUR&quot;]]<span class=\"example-io\">, rates1 = </span>[9.0]<span class=\"example-io\">, pairs2 = </span>[[&quot;NGN&quot;,&quot;EUR&quot;]]<span class=\"example-io\">, rates2 = </span>[6.0]</p>\n\n<p><strong>Output:</strong> 1.50000</p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>Converting <strong>NGN</strong> to <strong>EUR</strong> on day 1 and <strong>EUR</strong> to <strong>NGN</strong> using the inverse rate on day 2 gives the maximum amount.</p>\n</div>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">initialCurrency = &quot;USD&quot;, pairs1 = [[&quot;USD&quot;,&quot;EUR&quot;]], rates1 = [1.0], pairs2 = [[&quot;EUR&quot;,&quot;JPY&quot;]], rates2 = [10.0]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">1.00000</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>In this example, there is no need to make any conversions on either day.</p>\n</div>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= initialCurrency.length &lt;= 3</code></li>\n\t<li><code>initialCurrency</code> consists only of uppercase English letters.</li>\n\t<li><code>1 &lt;= n == pairs1.length &lt;= 10</code></li>\n\t<li><code>1 &lt;= m == pairs2.length &lt;= 10</code></li>\n\t<li><code>pairs1[i] == [startCurrency<sub>i</sub>, targetCurrency<sub>i</sub>]</code><!-- notionvc: c31b5bb8-4df6-4987-9bcd-6dff8a5f7cd4 --></li>\n\t<li><code>pairs2[i] == [startCurrency<sub>i</sub>, targetCurrency<sub>i</sub>]</code><!--{C}%3C!%2D%2D%20notionvc%3A%20c31b5bb8-4df6-4987-9bcd-6dff8a5f7cd4%20%2D%2D%3E--></li>\n\t<li><code>1 &lt;= startCurrency<sub>i</sub>.length, targetCurrency<sub>i</sub>.length &lt;= 3</code></li>\n\t<li><code>startCurrency<sub>i</sub></code> and <code>targetCurrency<sub>i</sub></code> consist only of uppercase English letters.</li>\n\t<li><code>rates1.length == n</code></li>\n\t<li><code>rates2.length == m</code></li>\n\t<li><code>1.0 &lt;= rates1[i], rates2[i] &lt;= 10.0</code></li>\n\t<li>The input is generated such that there are no contradictions or cycles in the conversion graphs for either day.</li>\n\t<li>The input is generated such that the output is <strong>at most</strong> <code>5 * 10<sup>10</sup></code>.</li>\n</ul>\n",
            "translatedTitle": "两天自由外汇交易后的最大货币数",
            "translatedContent": "<p>给你一个字符串 <code>initialCurrency</code>，表示初始货币类型，并且你一开始拥有 <code>1.0</code> 单位的 <code>initialCurrency</code>。</p>\n\n<p>另给你四个数组，分别表示货币对（字符串）和汇率（实数）：</p>\n\n<ul>\n\t<li><code>pairs1[i] = [startCurrency<sub>i</sub>, targetCurrency<sub>i</sub>]</code> 表示在&nbsp;<strong>第 1 天</strong>，可以按照汇率 <code>rates1[i]</code> 将 <code>startCurrency<sub>i</sub></code> 转换为 <code>targetCurrency<sub>i</sub></code>。</li>\n\t<li><code>pairs2[i] = [startCurrency<sub>i</sub>, targetCurrency<sub>i</sub>]</code> 表示在&nbsp;<strong>第 2 天</strong>，可以按照汇率 <code>rates2[i]</code> 将 <code>startCurrency<sub>i</sub></code> 转换为 <code>targetCurrency<sub>i</sub></code>。</li>\n\t<li>此外，每种 <code>targetCurrency</code> 都可以以汇率 <code>1 / rate</code> 转换回对应的 <code>startCurrency</code>。</li>\n</ul>\n\n<p>你可以在&nbsp;<strong>第 1 天&nbsp;</strong>使用 <code>rates1</code> 进行任意次数的兑换（包括 0 次），然后在&nbsp;<strong>第 2 天&nbsp;</strong>使用 <code>rates2</code> 再进行任意次数的兑换（包括 0 次）。</p>\n\n<p>返回在两天兑换后，最大可能拥有的 <code>initialCurrency</code> 的数量。</p>\n\n<p><strong>注意：</strong>汇率是有效的，并且第 1 天和第 2 天的汇率之间相互独立，不会产生矛盾。</p>\n\n<p>&nbsp;</p>\n\n<p><strong class=\"example\">示例 1：</strong></p>\n\n<div class=\"example-block\">\n<p><strong>输入：</strong> <span class=\"example-io\">initialCurrency = \"EUR\", pairs1 = [[\"EUR\",\"USD\"],[\"USD\",\"JPY\"]], rates1 = [2.0,3.0], pairs2 = [[\"JPY\",\"USD\"],[\"USD\",\"CHF\"],[\"CHF\",\"EUR\"]], rates2 = [4.0,5.0,6.0]</span></p>\n\n<p><strong>输出：</strong> <span class=\"example-io\">720.00000</span></p>\n\n<p><strong>解释：</strong></p>\n\n<p>根据题目要求，需要最大化最终的 <strong>EUR</strong> 数量，从 1.0 <strong>EUR</strong> 开始：</p>\n\n<ul>\n\t<li><strong>第 1 天：</strong>\n\n\t<ul>\n\t\t<li>将 <strong>EUR</strong> 换成 <strong>USD</strong>，得到 2.0&nbsp;<strong>USD</strong>。</li>\n\t\t<li>将 <strong>USD</strong> 换成 <strong>JPY</strong>，得到 6.0 <strong>JPY</strong>。</li>\n\t</ul>\n\t</li>\n\t<li><strong>第 2 天：</strong>\n\t<ul>\n\t\t<li>将 <strong>JPY</strong> 换成 <strong>USD</strong>，得到 24.0 <strong>USD</strong>。</li>\n\t\t<li>将 <strong>USD</strong> 换成 <strong>CHF</strong>，得到 120.0 <strong>CHF</strong>。</li>\n\t\t<li>最后将 <strong>CHF</strong> 换回 <strong>EUR</strong>，得到 720.0 <strong>EUR</strong>。</li>\n\t</ul>\n\t</li>\n</ul>\n</div>\n\n<p><strong class=\"example\">示例 2：</strong></p>\n\n<div class=\"example-block\">\n<p><strong>输入：</strong> <span class=\"example-io\">initialCurrency = \"NGN\", pairs1 = [[\"NGN\",\"EUR\"]], rates1 = [9.0], pairs2 = [[\"NGN\",\"EUR\"]], rates2 = [6.0]</span></p>\n\n<p><strong>输出：</strong> <span class=\"example-io\">1.50000</span></p>\n\n<p><strong>解释：</strong></p>\n\n<p>在第 1 天将 <strong>NGN</strong> 换成 <strong>EUR</strong>，并在第 2 天用反向汇率将 <strong>EUR</strong> 换回 <strong>NGN</strong>，可以最大化最终的 <strong>NGN</strong> 数量。</p>\n</div>\n\n<p><strong class=\"example\">示例 3：</strong></p>\n\n<div class=\"example-block\">\n<p><strong>输入：</strong> <span class=\"example-io\">initialCurrency = \"USD\", pairs1 = [[\"USD\",\"EUR\"]], rates1 = [1.0], pairs2 = [[\"EUR\",\"JPY\"]], rates2 = [10.0]</span></p>\n\n<p><strong>输出：</strong> <span class=\"example-io\">1.00000</span></p>\n\n<p><strong>解释：</strong></p>\n\n<p>在这个例子中，不需要在任何一天进行任何兑换。</p>\n</div>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= initialCurrency.length &lt;= 3</code></li>\n\t<li><code>initialCurrency</code> 仅由大写英文字母组成。</li>\n\t<li><code>1 &lt;= n == pairs1.length &lt;= 10</code></li>\n\t<li><code>1 &lt;= m == pairs2.length &lt;= 10</code></li>\n\t<li><code>pairs1[i] == [startCurrency<sub>i</sub>, targetCurrency<sub>i</sub>]</code></li>\n\t<li><code>pairs2[i] == [startCurrency<sub>i</sub>, targetCurrency<sub>i</sub>]</code></li>\n\t<li><code>1 &lt;= startCurrency<sub>i</sub>.length, targetCurrency<sub>i</sub>.length &lt;= 3</code></li>\n\t<li><code>startCurrency<sub>i</sub></code> 和 <code>targetCurrency<sub>i</sub></code> 仅由大写英文字母组成。</li>\n\t<li><code>rates1.length == n</code></li>\n\t<li><code>rates2.length == m</code></li>\n\t<li><code>1.0 &lt;= rates1[i], rates2[i] &lt;= 10.0</code></li>\n\t<li>输入保证两个转换图在各自的天数中没有矛盾或循环。</li>\n\t<li>输入保证输出&nbsp;<strong>最大</strong>&nbsp;为&nbsp;<code>5 * 10<sup>10</sup></code>。</li>\n</ul>\n",
            "isPaidOnly": false,
            "difficulty": "Medium",
            "likes": 5,
            "dislikes": 0,
            "isLiked": null,
            "similarQuestions": "[{\"title\": \"Evaluate Division\", \"titleSlug\": \"evaluate-division\", \"difficulty\": \"Medium\", \"translatedTitle\": \"\\u9664\\u6cd5\\u6c42\\u503c\", \"isPaidOnly\": false}]",
            "contributors": [],
            "langToValidPlayground": "{\"cpp\": false, \"java\": false, \"python\": true, \"python3\": false, \"mysql\": false, \"mssql\": false, \"oraclesql\": false, \"c\": false, \"csharp\": false, \"javascript\": false, \"typescript\": false, \"bash\": false, \"php\": false, \"swift\": false, \"kotlin\": false, \"dart\": false, \"golang\": false, \"ruby\": false, \"scala\": false, \"html\": false, \"pythonml\": false, \"rust\": false, \"racket\": false, \"erlang\": false, \"elixir\": false, \"pythondata\": false, \"react\": false, \"vanillajs\": false, \"postgresql\": false, \"cangjie\": false}",
            "topicTags": [
                {
                    "name": "Depth-First Search",
                    "slug": "depth-first-search",
                    "translatedName": "深度优先搜索",
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Breadth-First Search",
                    "slug": "breadth-first-search",
                    "translatedName": "广度优先搜索",
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Graph",
                    "slug": "graph",
                    "translatedName": "图",
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "Array",
                    "slug": "array",
                    "translatedName": "数组",
                    "__typename": "TopicTagNode"
                },
                {
                    "name": "String",
                    "slug": "string",
                    "translatedName": "字符串",
                    "__typename": "TopicTagNode"
                }
            ],
            "companyTagStats": null,
            "codeSnippets": [
                {
                    "lang": "C++",
                    "langSlug": "cpp",
                    "code": "class Solution {\npublic:\n    double maxAmount(string initialCurrency, vector<vector<string>>& pairs1, vector<double>& rates1, vector<vector<string>>& pairs2, vector<double>& rates2) {\n        \n    }\n};",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Java",
                    "langSlug": "java",
                    "code": "class Solution {\n    public double maxAmount(String initialCurrency, List<List<String>> pairs1, double[] rates1, List<List<String>> pairs2, double[] rates2) {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python",
                    "langSlug": "python",
                    "code": "class Solution(object):\n    def maxAmount(self, initialCurrency, pairs1, rates1, pairs2, rates2):\n        \"\"\"\n        :type initialCurrency: str\n        :type pairs1: List[List[str]]\n        :type rates1: List[float]\n        :type pairs2: List[List[str]]\n        :type rates2: List[float]\n        :rtype: float\n        \"\"\"\n        ",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Python3",
                    "langSlug": "python3",
                    "code": "class Solution:\n    def maxAmount(self, initialCurrency: str, pairs1: List[List[str]], rates1: List[float], pairs2: List[List[str]], rates2: List[float]) -> float:\n        ",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C",
                    "langSlug": "c",
                    "code": "double maxAmount(char* initialCurrency, char*** pairs1, int pairs1Size, int* pairs1ColSize, double* rates1, int rates1Size, char*** pairs2, int pairs2Size, int* pairs2ColSize, double* rates2, int rates2Size) {\n    \n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "C#",
                    "langSlug": "csharp",
                    "code": "public class Solution {\n    public double MaxAmount(string initialCurrency, IList<IList<string>> pairs1, double[] rates1, IList<IList<string>> pairs2, double[] rates2) {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "JavaScript",
                    "langSlug": "javascript",
                    "code": "/**\n * @param {string} initialCurrency\n * @param {string[][]} pairs1\n * @param {number[]} rates1\n * @param {string[][]} pairs2\n * @param {number[]} rates2\n * @return {number}\n */\nvar maxAmount = function(initialCurrency, pairs1, rates1, pairs2, rates2) {\n    \n};",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "TypeScript",
                    "langSlug": "typescript",
                    "code": "function maxAmount(initialCurrency: string, pairs1: string[][], rates1: number[], pairs2: string[][], rates2: number[]): number {\n    \n};",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "PHP",
                    "langSlug": "php",
                    "code": "class Solution {\n\n    /**\n     * @param String $initialCurrency\n     * @param String[][] $pairs1\n     * @param Float[] $rates1\n     * @param String[][] $pairs2\n     * @param Float[] $rates2\n     * @return Float\n     */\n    function maxAmount($initialCurrency, $pairs1, $rates1, $pairs2, $rates2) {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Swift",
                    "langSlug": "swift",
                    "code": "class Solution {\n    func maxAmount(_ initialCurrency: String, _ pairs1: [[String]], _ rates1: [Double], _ pairs2: [[String]], _ rates2: [Double]) -> Double {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Kotlin",
                    "langSlug": "kotlin",
                    "code": "class Solution {\n    fun maxAmount(initialCurrency: String, pairs1: List<List<String>>, rates1: DoubleArray, pairs2: List<List<String>>, rates2: DoubleArray): Double {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Dart",
                    "langSlug": "dart",
                    "code": "class Solution {\n  double maxAmount(String initialCurrency, List<List<String>> pairs1, List<double> rates1, List<List<String>> pairs2, List<double> rates2) {\n    \n  }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Go",
                    "langSlug": "golang",
                    "code": "func maxAmount(initialCurrency string, pairs1 [][]string, rates1 []float64, pairs2 [][]string, rates2 []float64) float64 {\n    \n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Ruby",
                    "langSlug": "ruby",
                    "code": "# @param {String} initial_currency\n# @param {String[][]} pairs1\n# @param {Float[]} rates1\n# @param {String[][]} pairs2\n# @param {Float[]} rates2\n# @return {Float}\ndef max_amount(initial_currency, pairs1, rates1, pairs2, rates2)\n    \nend",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Scala",
                    "langSlug": "scala",
                    "code": "object Solution {\n    def maxAmount(initialCurrency: String, pairs1: List[List[String]], rates1: Array[Double], pairs2: List[List[String]], rates2: Array[Double]): Double = {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Rust",
                    "langSlug": "rust",
                    "code": "impl Solution {\n    pub fn max_amount(initial_currency: String, pairs1: Vec<Vec<String>>, rates1: Vec<f64>, pairs2: Vec<Vec<String>>, rates2: Vec<f64>) -> f64 {\n        \n    }\n}",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Racket",
                    "langSlug": "racket",
                    "code": "(define/contract (max-amount initialCurrency pairs1 rates1 pairs2 rates2)\n  (-> string? (listof (listof string?)) (listof flonum?) (listof (listof string?)) (listof flonum?) flonum?)\n  )",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Erlang",
                    "langSlug": "erlang",
                    "code": "-spec max_amount(InitialCurrency :: unicode:unicode_binary(), Pairs1 :: [[unicode:unicode_binary()]], Rates1 :: [float()], Pairs2 :: [[unicode:unicode_binary()]], Rates2 :: [float()]) -> float().\nmax_amount(InitialCurrency, Pairs1, Rates1, Pairs2, Rates2) ->\n  .",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Elixir",
                    "langSlug": "elixir",
                    "code": "defmodule Solution do\n  @spec max_amount(initial_currency :: String.t, pairs1 :: [[String.t]], rates1 :: [float], pairs2 :: [[String.t]], rates2 :: [float]) :: float\n  def max_amount(initial_currency, pairs1, rates1, pairs2, rates2) do\n    \n  end\nend",
                    "__typename": "CodeSnippetNode"
                },
                {
                    "lang": "Cangjie",
                    "langSlug": "cangjie",
                    "code": "class Solution {\n    func maxAmount(initialCurrency: String, pairs1: ArrayList<ArrayList<String>>, rates1: Array<Float64>, pairs2: ArrayList<ArrayList<String>>, rates2: Array<Float64>): Float64 {\n\n    }\n}",
                    "__typename": "CodeSnippetNode"
                }
            ],
            "stats": "{\"totalAccepted\": \"2.2K\", \"totalSubmission\": \"3.4K\", \"totalAcceptedRaw\": 2182, \"totalSubmissionRaw\": 3396, \"acRate\": \"64.3%\"}",
            "hints": [
                "Choose an intermediate currency. Convert from <code>initialCurrency</code> to this currency on day 1, and from that currency back to <code>initialCurrency</code> on day 2.",
                "Use a DFS/BFS to calculate the direct conversion rate between any two currencies."
            ],
            "solution": null,
            "status": null,
            "sampleTestCase": "\"EUR\"\n[[\"EUR\",\"USD\"],[\"USD\",\"JPY\"]]\n[2.0,3.0]\n[[\"JPY\",\"USD\"],[\"USD\",\"CHF\"],[\"CHF\",\"EUR\"]]\n[4.0,5.0,6.0]",
            "metaData": "{\n  \"name\": \"maxAmount\",\n  \"params\": [\n    {\n      \"name\": \"initialCurrency\",\n      \"type\": \"string\"\n    },\n    {\n      \"type\": \"list<list<string>>\",\n      \"name\": \"pairs1\"\n    },\n    {\n      \"type\": \"double[]\",\n      \"name\": \"rates1\"\n    },\n    {\n      \"type\": \"list<list<string>>\",\n      \"name\": \"pairs2\"\n    },\n    {\n      \"type\": \"double[]\",\n      \"name\": \"rates2\"\n    }\n  ],\n  \"return\": {\n    \"type\": \"double\"\n  }\n}",
            "judgerAvailable": true,
            "judgeType": "large",
            "mysqlSchemas": [],
            "enableRunCode": true,
            "envInfo": "{\"cpp\":[\"C++\",\"<p>\\u7248\\u672c\\uff1a<code>clang 19<\\/code> \\u91c7\\u7528\\u6700\\u65b0 C++ 23 \\u6807\\u51c6\\uff0c\\u5e76\\u4f7f\\u7528 GCC 14 \\u63d0\\u4f9b\\u7684 <code>libstdc++<\\/code>\\u3002<\\/p>\\r\\n\\r\\n<p>\\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528 <code>-O2<\\/code> \\u7ea7\\u4f18\\u5316\\uff0c\\u5e76\\u63d0\\u4f9b <code>-gline-tables-only<\\/code> \\u53c2\\u6570\\u3002<a href=\\\"https:\\/\\/github.com\\/google\\/sanitizers\\/wiki\\/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer<\\/a> \\u4e5f\\u88ab\\u5f00\\u542f\\u6765\\u68c0\\u6d4b <code>out-of-bounds<\\/code> \\u548c <code>use-after-free<\\/code> \\u9519\\u8bef\\u3002<\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\"],\"java\":[\"Java\",\"<p>\\u7248\\u672c\\uff1a<code>OpenJDK 21<\\/code>\\u3002\\u4f7f\\u7528\\u7f16\\u8bd1\\u53c2\\u6570 <code>--enable-preview --release 21<\\/code><\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u88ab\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n<p>\\u5305\\u542b Pair \\u7c7b: https:\\/\\/docs.oracle.com\\/javase\\/8\\/javafx\\/api\\/javafx\\/util\\/Pair.html <\\/p>\"],\"python\":[\"Python\",\"<p>\\u7248\\u672c\\uff1a <code>Python 2.7.18<\\/code><\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u5e38\\u7528\\u5e93\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8 \\u5bfc\\u5165\\uff0c\\u5982\\uff1a<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>\\u3002\\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n<p>\\u6ce8\\u610f Python 2.7 <a href=\\\"https:\\/\\/www.python.org\\/dev\\/peps\\/pep-0373\\/\\\" target=\\\"_blank\\\">\\u5df2\\u4e0d\\u518d\\u7ef4\\u62a4<\\/a>\\u3002 \\u5982\\u60f3\\u4f7f\\u7528\\u6700\\u65b0\\u7248\\u7684Python\\uff0c\\u8bf7\\u9009\\u62e9Python 3\\u3002<\\/p>\"],\"c\":[\"C\",\"<p>\\u7248\\u672c\\uff1a<code>GCC 14<\\/code>\\uff0c\\u91c7\\u7528 GNU11 \\u6807\\u51c6\\u3002<\\/p>\\r\\n\\r\\n<p>\\u7f16\\u8bd1\\u65f6\\uff0c\\u5c06\\u4f1a\\u91c7\\u7528 <code>-O2<\\/code> \\u7ea7\\u4f18\\u5316\\uff0c\\u5e76\\u63d0\\u4f9b <code>-g1<\\/code> \\u53c2\\u6570\\u3002 <a href=\\\"https:\\/\\/github.com\\/google\\/sanitizers\\/wiki\\/AddressSanitizer\\\" target=\\\"_blank\\\">AddressSanitizer<\\/a> \\u4e5f\\u88ab\\u5f00\\u542f\\u6765\\u68c0\\u6d4b <code>out-of-bounds<\\/code> \\u548c <code>use-after-free<\\/code> \\u9519\\u8bef\\u3002<\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u4f7f\\u7528\\u65b9\\u4fbf\\uff0c\\u5927\\u90e8\\u5206\\u6807\\u51c6\\u5e93\\u7684\\u5934\\u6587\\u4ef6\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n<p>\\u5982\\u60f3\\u4f7f\\u7528\\u54c8\\u5e0c\\u8868\\u8fd0\\u7b97, \\u60a8\\u53ef\\u4ee5\\u4f7f\\u7528 <a href=\\\"https:\\/\\/troydhanson.github.io\\/uthash\\/\\\" target=\\\"_blank\\\">uthash<\\/a>\\u3002 \\\"uthash.h\\\"\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5bfc\\u5165\\u3002\\u8bf7\\u770b\\u5982\\u4e0b\\u793a\\u4f8b:<\\/p>\\r\\n\\r\\n<p><b>1. \\u5f80\\u54c8\\u5e0c\\u8868\\u4e2d\\u6dfb\\u52a0\\u4e00\\u4e2a\\u5bf9\\u8c61\\uff1a<\\/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. \\u5728\\u54c8\\u5e0c\\u8868\\u4e2d\\u67e5\\u627e\\u4e00\\u4e2a\\u5bf9\\u8c61\\uff1a<\\/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. \\u4ece\\u54c8\\u5e0c\\u8868\\u4e2d\\u5220\\u9664\\u4e00\\u4e2a\\u5bf9\\u8c61\\uff1a<\\/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> \\u8fd0\\u884c\\u5728 .NET 9 \\u4e0a<\\/p>\"],\"javascript\":[\"JavaScript\",\"<p>\\u7248\\u672c\\uff1a<code>Node.js 20.10.0<\\/code><\\/p>\\r\\n\\r\\n<p>\\u60a8\\u7684\\u4ee3\\u7801\\u5728\\u6267\\u884c\\u65f6\\u5c06\\u5e26\\u4e0a <code>--harmony<\\/code> \\u6807\\u8bb0\\u6765\\u5f00\\u542f <a href=\\\"http:\\/\\/node.green\\/\\\" target=\\\"_blank\\\">\\u65b0\\u7248ES6\\u7279\\u6027<\\/a>\\u3002<\\/p>\\r\\n\\r\\n<p><a href=\\\"https:\\/\\/lodash.com\\\" target=\\\"_blank\\\">lodash.js<\\/a> \\u5e93\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5305\\u542b\\u3002<\\/p>\\r\\n\\r\\n<p> \\u5982\\u9700\\u4f7f\\u7528\\u961f\\u5217\\/\\u4f18\\u5148\\u961f\\u5217\\uff0c\\u60a8\\u53ef\\u4f7f\\u7528 <a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/priority-queue\\/blob\\/v5\\/README.md\\\" target=\\\"_blank\\\"> datastructures-js\\/priority-queue@5.4.0<\\/a>\\uff0c<a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/queue\\/tree\\/v4.2.3\\\" target=\\\"_blank\\\"> datastructures-js\\/queue@4.2.3<\\/a> \\u4ee5\\u53ca <a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/deque\\/tree\\/v1.0.4\\\" target=\\\"_blank\\\"> datastructures-js\\/deque@1.0.4<\\/a>\\u3002<\\/p>\"],\"ruby\":[\"Ruby\",\"<p>\\u4f7f\\u7528 <code>Ruby 3.2<\\/code> \\u6267\\u884c<\\/p>\\r\\n\\r\\n<p>\\u4e00\\u4e9b\\u5e38\\u7528\\u7684\\u6570\\u636e\\u7ed3\\u6784\\u5df2\\u5728 Algorithms \\u6a21\\u5757\\u4e2d\\u63d0\\u4f9b\\uff1ahttps:\\/\\/www.rubydoc.info\\/github\\/kanwei\\/algorithms\\/Algorithms<\\/p>\"],\"swift\":[\"Swift\",\"<p>\\u7248\\u672c\\uff1a<code>Swift 6.0<\\/code><\\/p>\\r\\n\\r\\n<p>\\u60a8\\u53ef\\u4ee5\\u4f7f\\u7528 <a href=\\\"https:\\/\\/github.com\\/apple\\/swift-algorithms\\/tree\\/1.2.0\\\" target=\\\"_blank\\\">swift-algorithms 1.2.0<\\/a>\\uff0c<a href=\\\"https:\\/\\/github.com\\/apple\\/swift-collections\\/tree\\/1.1.4\\\" target=\\\"_blank\\\">swift-collections 1.1.4<\\/a> \\u548c <a href=\\\"https:\\/\\/github.com\\/apple\\/swift-numerics\\/tree\\/1.0.2\\\" target=\\\"_blank\\\">swift-numerics 1.0.2<\\/a><\\/p>\\r\\n\\r\\n<p>\\u6211\\u4eec\\u901a\\u5e38\\u4fdd\\u8bc1\\u66f4\\u65b0\\u5230 <a href=\\\"https:\\/\\/swift.org\\/download\\/\\\" target=\\\"_blank\\\">Apple\\u653e\\u51fa\\u7684\\u6700\\u65b0\\u7248Swift<\\/a>\\u3002\\u5982\\u679c\\u60a8\\u53d1\\u73b0Swift\\u4e0d\\u662f\\u6700\\u65b0\\u7248\\u7684\\uff0c\\u8bf7\\u8054\\u7cfb\\u6211\\u4eec\\uff01\\u6211\\u4eec\\u5c06\\u5c3d\\u5feb\\u66f4\\u65b0\\u3002<\\/p>\"],\"golang\":[\"Go\",\"<p>\\u7248\\u672c\\uff1a<code>Go 1.23<\\/code><\\/p>\\r\\n\\r\\n<p>\\u652f\\u6301 <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> \\u548c <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> \\u7b2c\\u4e09\\u65b9\\u5e93\\u3002<\\/p>\"],\"python3\":[\"Python3\",\"<p>\\u7248\\u672c\\uff1a<code>Python 3.11<\\/code><\\/p>\\r\\n\\r\\n<p>\\u4e3a\\u4e86\\u65b9\\u4fbf\\u8d77\\u89c1\\uff0c\\u5927\\u90e8\\u5206\\u5e38\\u7528\\u5e93\\u5df2\\u7ecf\\u88ab\\u81ea\\u52a8 \\u5bfc\\u5165\\uff0c\\u5982<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>\\u3002 \\u5982\\u679c\\u60a8\\u9700\\u8981\\u4f7f\\u7528\\u5176\\u4ed6\\u5e93\\u51fd\\u6570\\uff0c\\u8bf7\\u81ea\\u884c\\u5bfc\\u5165\\u3002<\\/p>\\r\\n\\r\\n<p>\\u5982\\u9700\\u4f7f\\u7528 Map\\/TreeMap \\u6570\\u636e\\u7ed3\\u6784\\uff0c\\u60a8\\u53ef\\u4f7f\\u7528 <a href=\\\"http:\\/\\/www.grantjenks.com\\/docs\\/sortedcontainers\\/\\\" target=\\\"_blank\\\">sortedcontainers<\\/a> \\u5e93\\u3002<\\/p>\"],\"scala\":[\"Scala\",\"<p>\\u7248\\u672c\\uff1a<code>Scala 3.3.1<\\/code><\\/p>\"],\"kotlin\":[\"Kotlin\",\"<p>\\u7248\\u672c\\uff1a<code>Kotlin 1.9.0<\\/code><\\/p>\\r\\n\\r\\n<p>\\u6211\\u4eec\\u4f7f\\u7528\\u7684\\u662f JetBrains \\u63d0\\u4f9b\\u7684 experimental compiler\\u3002\\u5982\\u679c\\u60a8\\u8ba4\\u4e3a\\u60a8\\u9047\\u5230\\u4e86\\u7f16\\u8bd1\\u5668\\u76f8\\u5173\\u7684\\u95ee\\u9898\\uff0c\\u8bf7\\u5411\\u6211\\u4eec\\u53cd\\u9988<\\/p>\"],\"rust\":[\"Rust\",\"<p>\\u7248\\u672c\\uff1a<code>rust 1.79.0<\\/code><\\/p>\\r\\n\\r\\n<p>\\u652f\\u6301 crates.io \\u7684 <a href=\\\"https:\\/\\/crates.io\\/crates\\/rand\\\" target=\\\"_blank\\\">rand<\\/a> \\u548c <a href=\\\"https:\\/\\/crates.io\\/crates\\/regex\\\" target=\\\"_blank\\\">regex<\\/a><\\/p>\"],\"php\":[\"PHP\",\"<p><code>PHP 8.2<\\/code>.<\\/p>\\r\\n\\r\\n<p>With bcmath module.<\\/p>\"],\"typescript\":[\"TypeScript\",\"<p>TypeScript 5.1.6<\\/p>\\r\\n\\r\\n<p>Compile Options: --alwaysStrict --strictBindCallApply --strictFunctionTypes --target ES2022<\\/p>\\r\\n\\r\\n<p><a href=\\\"https:\\/\\/lodash.com\\\" target=\\\"_blank\\\">lodash.js<\\/a> \\u5e93\\u5df2\\u7ecf\\u9ed8\\u8ba4\\u88ab\\u5305\\u542b\\u3002<\\/p>\\r\\n\\r\\n<p> \\u5982\\u9700\\u4f7f\\u7528\\u961f\\u5217\\/\\u4f18\\u5148\\u961f\\u5217\\uff0c\\u60a8\\u53ef\\u4f7f\\u7528 <a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/priority-queue\\/blob\\/v5\\/README.md\\\" target=\\\"_blank\\\"> datastructures-js\\/priority-queue@5.4.0<\\/a>\\uff0c<a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/queue\\/tree\\/v4.2.3\\\" target=\\\"_blank\\\"> datastructures-js\\/queue@4.2.3<\\/a> \\u4ee5\\u53ca <a href=\\\"https:\\/\\/github.com\\/datastructures-js\\/deque\\/tree\\/v1.0.4\\\" target=\\\"_blank\\\"> datastructures-js\\/deque@1.0.4<\\/a>\\u3002<\\/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>\\u4f7f\\u7528 #lang racket<\\/p>\\r\\n\\r\\n<p>\\u5df2\\u9884\\u5148 (require data\\/gvector data\\/queue data\\/order data\\/heap). \\u82e5\\u9700\\u4f7f\\u7528\\u5176\\u5b83\\u6570\\u636e\\u7ed3\\u6784\\uff0c\\u53ef\\u81ea\\u884c require\\u3002<\\/p>\"],\"erlang\":[\"Erlang\",\"Erlang\\/OTP 26\"],\"elixir\":[\"Elixir\",\"Elixir 1.17 with Erlang\\/OTP 26\"],\"dart\":[\"Dart\",\"<p>Dart 3.2\\u3002\\u60a8\\u53ef\\u4ee5\\u4f7f\\u7528 <a href=\\\"https:\\/\\/pub.dev\\/packages\\/collection\\/versions\\/1.18.0\\\" target=\\\"_blank\\\">collection<\\/a> \\u5305<\\/p>\\r\\n\\r\\n<p>\\u60a8\\u7684\\u4ee3\\u7801\\u5c06\\u4f1a\\u88ab\\u4e0d\\u7f16\\u8bd1\\u76f4\\u63a5\\u8fd0\\u884c<\\/p>\"],\"cangjie\":[\"Cangjie\",\"<p>\\u7248\\u672c\\uff1a0.53.11 (cjnative)<\\/p>\\r\\n\\r\\n<p>\\u7f16\\u8bd1\\u53c2\\u6570\\uff1a<code>-O2 --disable-reflection<\\/code><\\/p>\\r\\n\\r\\n<p>\\u5feb\\u901f\\u5165\\u95e8\\u8bf7\\u67e5\\u9605<a href=\\\"https:\\/\\/leetcode.cn\\/leetbook\\/detail\\/cangjie\\/\\\" target=\\\"_blank\\\">\\u300c\\u4ed3\\u9889\\u7f16\\u7a0b\\u8bed\\u8a00\\u5f00\\u53d1\\u6307\\u5357\\u300d<\\/a><\\/p>\"]}",
            "book": null,
            "isSubscribed": false,
            "isDailyQuestion": false,
            "dailyRecordStatus": null,
            "editorType": "CKEDITOR",
            "ugcQuestionId": null,
            "style": "LEETCODE",
            "exampleTestcases": "\"EUR\"\n[[\"EUR\",\"USD\"],[\"USD\",\"JPY\"]]\n[2.0,3.0]\n[[\"JPY\",\"USD\"],[\"USD\",\"CHF\"],[\"CHF\",\"EUR\"]]\n[4.0,5.0,6.0]\n\"NGN\"\n[[\"NGN\",\"EUR\"]]\n[9.0]\n[[\"NGN\",\"EUR\"]]\n[6.0]\n\"USD\"\n[[\"USD\",\"EUR\"]]\n[1.0]\n[[\"EUR\",\"JPY\"]]\n[10.0]",
            "__typename": "QuestionNode"
        }
    }
}