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leetcode-problemset/leetcode-cn/originData/sum-of-even-numbers-after-queries.json
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"categoryTitle": "Algorithms",
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"title": "Sum of Even Numbers After Queries",
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"content": "<p>You are given an integer array <code>nums</code> and an array <code>queries</code> where <code>queries[i] = [val<sub>i</sub>, index<sub>i</sub>]</code>.</p>\n\n<p>For each query <code>i</code>, first, apply <code>nums[index<sub>i</sub>] = nums[index<sub>i</sub>] + val<sub>i</sub></code>, then print the sum of the even values of <code>nums</code>.</p>\n\n<p>Return <em>an integer array </em><code>answer</code><em> where </em><code>answer[i]</code><em> is the answer to the </em><code>i<sup>th</sup></code><em> query</em>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1,2,3,4], queries = [[1,0],[-3,1],[-4,0],[2,3]]\n<strong>Output:</strong> [8,6,2,4]\n<strong>Explanation:</strong> At the beginning, the array is [1,2,3,4].\nAfter adding 1 to nums[0], the array is [2,2,3,4], and the sum of even values is 2 + 2 + 4 = 8.\nAfter adding -3 to nums[1], the array is [2,-1,3,4], and the sum of even values is 2 + 4 = 6.\nAfter adding -4 to nums[0], the array is [-2,-1,3,4], and the sum of even values is -2 + 4 = 2.\nAfter adding 2 to nums[3], the array is [-2,-1,3,6], and the sum of even values is -2 + 6 = 4.\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1], queries = [[4,0]]\n<strong>Output:</strong> [0]\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 10<sup>4</sup></code></li>\n\t<li><code>-10<sup>4</sup> &lt;= nums[i] &lt;= 10<sup>4</sup></code></li>\n\t<li><code>1 &lt;= queries.length &lt;= 10<sup>4</sup></code></li>\n\t<li><code>-10<sup>4</sup> &lt;= val<sub>i</sub> &lt;= 10<sup>4</sup></code></li>\n\t<li><code>0 &lt;= index<sub>i</sub> &lt; nums.length</code></li>\n</ul>\n",
"translatedTitle": "查询后的偶数和",
"translatedContent": "<p>给出一个整数数组&nbsp;<code>A</code>&nbsp;和一个查询数组&nbsp;<code>queries</code>。</p>\n\n<p>对于第&nbsp;<code>i</code>&nbsp;次查询,有&nbsp;<code>val =&nbsp;queries[i][0], index&nbsp;= queries[i][1]</code>,我们会把&nbsp;<code>val</code>&nbsp;加到&nbsp;<code>A[index]</code>&nbsp;上。然后,第&nbsp;<code>i</code>&nbsp;次查询的答案是 <code>A</code> 中偶数值的和。</p>\n\n<p><em>(此处给定的&nbsp;<code>index = queries[i][1]</code>&nbsp;是从 0 开始的索引,每次查询都会永久修改数组&nbsp;<code>A</code>。)</em></p>\n\n<p>返回所有查询的答案。你的答案应当以数组&nbsp;<code>answer</code>&nbsp;给出,<code>answer[i]</code>&nbsp;为第&nbsp;<code>i</code>&nbsp;次查询的答案。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例:</strong></p>\n\n<pre><strong>输入:</strong>A = [1,2,3,4], queries = [[1,0],[-3,1],[-4,0],[2,3]]\n<strong>输出:</strong>[8,6,2,4]\n<strong>解释:</strong>\n开始时数组为 [1,2,3,4]。\n将 1 加到 A[0] 上之后,数组为 [2,2,3,4],偶数值之和为 2 + 2 + 4 = 8。\n将 -3 加到 A[1] 上之后,数组为 [2,-1,3,4],偶数值之和为 2 + 4 = 6。\n将 -4 加到 A[0] 上之后,数组为 [-2,-1,3,4],偶数值之和为 -2 + 4 = 2。\n将 2 加到 A[3] 上之后,数组为 [-2,-1,3,6],偶数值之和为 -2 + 6 = 4。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ol>\n\t<li><code>1 &lt;= A.length &lt;= 10000</code></li>\n\t<li><code>-10000 &lt;= A[i] &lt;= 10000</code></li>\n\t<li><code>1 &lt;= queries.length &lt;= 10000</code></li>\n\t<li><code>-10000 &lt;= queries[i][0] &lt;= 10000</code></li>\n\t<li><code>0 &lt;= queries[i][1] &lt; A.length</code></li>\n</ol>\n",
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