mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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171 lines
17 KiB
JSON
171 lines
17 KiB
JSON
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"questionId": "2262",
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"title": "Solving Questions With Brainpower",
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"titleSlug": "solving-questions-with-brainpower",
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"content": "<p>You are given a <strong>0-indexed</strong> 2D integer array <code>questions</code> where <code>questions[i] = [points<sub>i</sub>, brainpower<sub>i</sub>]</code>.</p>\n\n<p>The array describes the questions of an exam, where you have to process the questions <strong>in order</strong> (i.e., starting from question <code>0</code>) and make a decision whether to <strong>solve</strong> or <strong>skip</strong> each question. Solving question <code>i</code> will <strong>earn</strong> you <code>points<sub>i</sub></code> points but you will be <strong>unable</strong> to solve each of the next <code>brainpower<sub>i</sub></code> questions. If you skip question <code>i</code>, you get to make the decision on the next question.</p>\n\n<ul>\n\t<li>For example, given <code>questions = [[3, 2], [4, 3], [4, 4], [2, 5]]</code>:\n\n\t<ul>\n\t\t<li>If question <code>0</code> is solved, you will earn <code>3</code> points but you will be unable to solve questions <code>1</code> and <code>2</code>.</li>\n\t\t<li>If instead, question <code>0</code> is skipped and question <code>1</code> is solved, you will earn <code>4</code> points but you will be unable to solve questions <code>2</code> and <code>3</code>.</li>\n\t</ul>\n\t</li>\n</ul>\n\n<p>Return <em>the <strong>maximum</strong> points you can earn for the exam</em>.</p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> questions = [[3,2],[4,3],[4,4],[2,5]]\n<strong>Output:</strong> 5\n<strong>Explanation:</strong> The maximum points can be earned by solving questions 0 and 3.\n- Solve question 0: Earn 3 points, will be unable to solve the next 2 questions\n- Unable to solve questions 1 and 2\n- Solve question 3: Earn 2 points\nTotal points earned: 3 + 2 = 5. There is no other way to earn 5 or more points.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> questions = [[1,1],[2,2],[3,3],[4,4],[5,5]]\n<strong>Output:</strong> 7\n<strong>Explanation:</strong> The maximum points can be earned by solving questions 1 and 4.\n- Skip question 0\n- Solve question 1: Earn 2 points, will be unable to solve the next 2 questions\n- Unable to solve questions 2 and 3\n- Solve question 4: Earn 5 points\nTotal points earned: 2 + 5 = 7. There is no other way to earn 7 or more points.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= questions.length <= 10<sup>5</sup></code></li>\n\t<li><code>questions[i].length == 2</code></li>\n\t<li><code>1 <= points<sub>i</sub>, brainpower<sub>i</sub> <= 10<sup>5</sup></code></li>\n</ul>\n",
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"difficulty": "Medium",
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"code": "class Solution {\npublic:\n long long mostPoints(vector<vector<int>>& questions) {\n \n }\n};",
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"code": "# @param {Integer[][]} questions\n# @return {Integer}\ndef most_points(questions)\n \nend",
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"code": "object Solution {\n def mostPoints(questions: Array[Array[Int]]): Long = {\n \n }\n}",
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"lang": "Kotlin",
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"code": "class Solution {\n fun mostPoints(questions: Array<IntArray>): Long {\n \n }\n}",
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"lang": "Rust",
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"langSlug": "rust",
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"code": "impl Solution {\n pub fn most_points(questions: Vec<Vec<i32>>) -> i64 {\n \n }\n}",
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"code": "class Solution {\n\n /**\n * @param Integer[][] $questions\n * @return Integer\n */\n function mostPoints($questions) {\n \n }\n}",
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"code": "function mostPoints(questions: number[][]): number {\n\n};",
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"lang": "Racket",
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"code": "(define/contract (most-points questions)\n (-> (listof (listof exact-integer?)) exact-integer?)\n\n )",
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"lang": "Erlang",
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"langSlug": "erlang",
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"code": "-spec most_points(Questions :: [[integer()]]) -> integer().\nmost_points(Questions) ->\n .",
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"langSlug": "elixir",
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"code": "defmodule Solution do\n @spec most_points(questions :: [[integer]]) :: integer\n def most_points(questions) do\n\n end\nend",
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"stats": "{\"totalAccepted\": \"17.2K\", \"totalSubmission\": \"39K\", \"totalAcceptedRaw\": 17188, \"totalSubmissionRaw\": 38952, \"acRate\": \"44.1%\"}",
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"hints": [
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"For each question, we can either solve it or skip it. How can we use Dynamic Programming to decide the most optimal option for each problem?",
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"We store for each question the maximum points we can earn if we started the exam on that question.",
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"If we skip a question, then the answer for it will be the same as the answer for the next question.",
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"If we solve a question, then the answer for it will be the points of the current question plus the answer for the next solvable question.",
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"The maximum of these two values will be the answer to the current question."
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],
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"solution": null,
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"sampleTestCase": "[[3,2],[4,3],[4,4],[2,5]]",
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"metaData": "{\n \"name\": \"mostPoints\",\n \"params\": [\n {\n \"name\": \"questions\",\n \"type\": \"integer[][]\"\n }\n ],\n \"return\": {\n \"type\": \"long\"\n }\n}",
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