mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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162 lines
16 KiB
JSON
162 lines
16 KiB
JSON
{
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"question": {
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"questionId": "2499",
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"questionFrontendId": "2412",
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"boundTopicId": null,
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"title": "Minimum Money Required Before Transactions",
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"titleSlug": "minimum-money-required-before-transactions",
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"content": "<p>You are given a <strong>0-indexed</strong> 2D integer array <code><font face=\"monospace\">transactions</font></code>, where <code>transactions[i] = [cost<sub>i</sub>, cashback<sub>i</sub>]</code>.</p>\n\n<p>The array describes transactions, where each transaction must be completed exactly once in <strong>some order</strong>. At any given moment, you have a certain amount of <code>money</code>. In order to complete transaction <code>i</code>, <code>money >= cost<sub>i</sub></code> must hold true. After performing a transaction, <code>money</code> becomes <code>money - cost<sub>i</sub> + cashback<sub>i</sub></code>.</p>\n\n<p>Return<em> the minimum amount of </em><code>money</code><em> required before any transaction so that all of the transactions can be completed <strong>regardless of the order</strong> of the transactions.</em></p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> transactions = [[2,1],[5,0],[4,2]]\n<strong>Output:</strong> 10\n<strong>Explanation:\n</strong>Starting with money = 10, the transactions can be performed in any order.\nIt can be shown that starting with money < 10 will fail to complete all transactions in some order.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> transactions = [[3,0],[0,3]]\n<strong>Output:</strong> 3\n<strong>Explanation:</strong>\n- If transactions are in the order [[3,0],[0,3]], the minimum money required to complete the transactions is 3.\n- If transactions are in the order [[0,3],[3,0]], the minimum money required to complete the transactions is 0.\nThus, starting with money = 3, the transactions can be performed in any order.\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= transactions.length <= 10<sup>5</sup></code></li>\n\t<li><code>transactions[i].length == 2</code></li>\n\t<li><code>0 <= cost<sub>i</sub>, cashback<sub>i</sub> <= 10<sup>9</sup></code></li>\n</ul>\n",
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"translatedTitle": null,
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"difficulty": "Hard",
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"exampleTestcases": "[[2,1],[5,0],[4,2]]\n[[3,0],[0,3]]",
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"categoryTitle": "Algorithms",
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"code": "class Solution {\npublic:\n long long minimumMoney(vector<vector<int>>& transactions) {\n \n }\n};",
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"code": "class Solution(object):\n def minimumMoney(self, transactions):\n \"\"\"\n :type transactions: List[List[int]]\n :rtype: int\n \"\"\"\n ",
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"code": "# @param {Integer[][]} transactions\n# @return {Integer}\ndef minimum_money(transactions)\n \nend",
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"code": "impl Solution {\n pub fn minimum_money(transactions: Vec<Vec<i32>>) -> i64 {\n \n }\n}",
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"code": "(define/contract (minimum-money transactions)\n (-> (listof (listof exact-integer?)) exact-integer?)\n\n )",
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"code": "-spec minimum_money(Transactions :: [[integer()]]) -> integer().\nminimum_money(Transactions) ->\n .",
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"code": "defmodule Solution do\n @spec minimum_money(transactions :: [[integer]]) :: integer\n def minimum_money(transactions) do\n\n end\nend",
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"hints": [
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"Split transactions that have cashback greater or equal to cost apart from transactions that have cashback less than cost. You will always <strong>earn</strong> money in the first scenario.",
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"For transactions that have cashback greater or equal to cost, sort them by cost in descending order.",
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"For transactions that have cashback less than cost, sort them by cashback in ascending order."
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