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38 lines
1.8 KiB
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38 lines
1.8 KiB
HTML
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<p>You are given a 2D integer array <code>tiles</code> where <code>tiles[i] = [l<sub>i</sub>, r<sub>i</sub>]</code> represents that every tile <code>j</code> in the range <code>l<sub>i</sub> <= j <= r<sub>i</sub></code> is colored white.</p>
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<p>You are also given an integer <code>carpetLen</code>, the length of a single carpet that can be placed <strong>anywhere</strong>.</p>
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<p>Return <em>the <strong>maximum</strong> number of white tiles that can be covered by the carpet</em>.</p>
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<p> </p>
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<p><strong>Example 1:</strong></p>
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<img alt="" src="https://assets.leetcode.com/uploads/2022/03/25/example1drawio3.png" style="width: 644px; height: 158px;" />
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<pre>
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<strong>Input:</strong> tiles = [[1,5],[10,11],[12,18],[20,25],[30,32]], carpetLen = 10
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<strong>Output:</strong> 9
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<strong>Explanation:</strong> Place the carpet starting on tile 10.
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It covers 9 white tiles, so we return 9.
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Note that there may be other places where the carpet covers 9 white tiles.
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It can be shown that the carpet cannot cover more than 9 white tiles.
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</pre>
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<p><strong>Example 2:</strong></p>
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<img alt="" src="https://assets.leetcode.com/uploads/2022/03/24/example2drawio.png" style="width: 231px; height: 168px;" />
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<pre>
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<strong>Input:</strong> tiles = [[10,11],[1,1]], carpetLen = 2
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<strong>Output:</strong> 2
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<strong>Explanation:</strong> Place the carpet starting on tile 10.
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It covers 2 white tiles, so we return 2.
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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 <= tiles.length <= 5 * 10<sup>4</sup></code></li>
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<li><code>tiles[i].length == 2</code></li>
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<li><code>1 <= l<sub>i</sub> <= r<sub>i</sub> <= 10<sup>9</sup></code></li>
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<li><code>1 <= carpetLen <= 10<sup>9</sup></code></li>
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<li>The <code>tiles</code> are <strong>non-overlapping</strong>.</li>
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</ul>
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