{ "data": { "question": { "questionId": "3613", "questionFrontendId": "3387", "boundTopicId": null, "title": "Maximize Amount After Two Days of Conversions", "titleSlug": "maximize-amount-after-two-days-of-conversions", "content": "

You are given a string initialCurrency, and you start with 1.0 of initialCurrency.

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You are also given four arrays with currency pairs (strings) and rates (real numbers):

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You can perform any number of conversions, including zero, using rates1 on day 1, followed by any number of additional conversions, including zero, using rates2 on day 2.

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Return the maximum amount of initialCurrency you can have after performing any number of conversions on both days in order.

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Note: 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.

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Example 1:

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Input: 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]

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Output: 720.00000

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Explanation:

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To get the maximum amount of EUR, starting with 1.0 EUR:

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Example 2:

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Input: initialCurrency = "NGN", pairs1 = [["NGN","EUR"]], rates1 = [9.0], pairs2 = [["NGN","EUR"]], rates2 = [6.0]

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Output: 1.50000

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Explanation:

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Converting NGN to EUR on day 1 and EUR to NGN using the inverse rate on day 2 gives the maximum amount.

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Example 3:

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Input: initialCurrency = "USD", pairs1 = [["USD","EUR"]], rates1 = [1.0], pairs2 = [["EUR","JPY"]], rates2 = [10.0]

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Output: 1.00000

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Explanation:

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In this example, there is no need to make any conversions on either day.

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Constraints:

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\"\"\"\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> pairs1, double[] rates1, IList> 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>, rates1: DoubleArray, pairs2: List>, rates2: DoubleArray): Double {\n \n }\n}", "__typename": "CodeSnippetNode" }, { "lang": "Dart", "langSlug": "dart", "code": "class Solution {\n double maxAmount(String initialCurrency, List> pairs1, List rates1, List> pairs2, List 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>, rates1: Vec, pairs2: Vec>, rates2: Vec) -> 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" } ], "stats": "{\"totalAccepted\": \"8.8K\", \"totalSubmission\": \"15.7K\", \"totalAcceptedRaw\": 8784, \"totalSubmissionRaw\": 15694, \"acRate\": \"56.0%\"}", "hints": [ "Choose an intermediate currency. Convert from initialCurrency to this currency on day 1, and from that currency back to initialCurrency 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>\",\n \"name\": \"pairs1\"\n },\n {\n \"type\": \"double[]\",\n \"name\": \"rates1\"\n },\n {\n \"type\": \"list>\",\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, "enableTestMode": false, "enableDebugger": true, "envInfo": "{\"cpp\": [\"C++\", \"

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