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40 lines
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40 lines
2.1 KiB
HTML
<p>You are given an integer <code>n</code> and a <strong>0-indexed</strong> <strong>2D array</strong> <code>queries</code> where <code>queries[i] = [type<sub>i</sub>, index<sub>i</sub>, val<sub>i</sub>]</code>.</p>
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<p>Initially, there is a <strong>0-indexed</strong> <code>n x n</code> matrix filled with <code>0</code>'s. For each query, you must apply one of the following changes:</p>
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<ul>
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<li>if <code>type<sub>i</sub> == 0</code>, set the values in the row with <code>index<sub>i</sub></code> to <code>val<sub>i</sub></code>, overwriting any previous values.</li>
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<li>if <code>type<sub>i</sub> == 1</code>, set the values in the column with <code>index<sub>i</sub></code> to <code>val<sub>i</sub></code>, overwriting any previous values.</li>
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</ul>
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<p>Return <em>the sum of integers in the matrix after all queries are applied</em>.</p>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<img alt="" src="https://assets.leetcode.com/uploads/2023/05/11/exm1.png" style="width: 681px; height: 161px;" />
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<pre>
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<strong>Input:</strong> n = 3, queries = [[0,0,1],[1,2,2],[0,2,3],[1,0,4]]
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<strong>Output:</strong> 23
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<strong>Explanation:</strong> The image above describes the matrix after each query. The sum of the matrix after all queries are applied is 23.
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</pre>
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<p><strong class="example">Example 2:</strong></p>
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<img alt="" src="https://assets.leetcode.com/uploads/2023/05/11/exm2.png" style="width: 681px; height: 331px;" />
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<pre>
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<strong>Input:</strong> n = 3, queries = [[0,0,4],[0,1,2],[1,0,1],[0,2,3],[1,2,1]]
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<strong>Output:</strong> 17
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<strong>Explanation:</strong> The image above describes the matrix after each query. The sum of the matrix after all queries are applied is 17.
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</pre>
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<p> </p>
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<p><strong>Constraints:</strong></p>
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<ul>
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<li><code>1 <= n <= 10<sup>4</sup></code></li>
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<li><code>1 <= queries.length <= 5 * 10<sup>4</sup></code></li>
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<li><code>queries[i].length == 3</code></li>
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<li><code>0 <= type<sub>i</sub> <= 1</code></li>
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<li><code>0 <= index<sub>i</sub> < n</code></li>
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<li><code>0 <= val<sub>i</sub> <= 10<sup>5</sup></code></li>
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</ul>
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