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"translatedContent": "<p>给你两个图像 <code>img1</code> 和 <code>img2</code> ,两个图像的大小都是 <code>n x n</code> ,用大小相同的二进制正方形矩阵表示。二进制矩阵仅由若干 <code>0</code> 和若干 <code>1</code> 组成。</p>\n\n<p><strong>转换</strong> 其中一个图像,将所有的 <code>1</code> 向左,右,上,或下滑动任何数量的单位;然后把它放在另一个图像的上面。该转换的 <strong>重叠</strong> 是指两个图像 <strong>都</strong> 具有 <code>1</code> 的位置的数目。</p>\n\n<div class=\"original__bRMd\">\n<div>\n<p>请注意,转换 <strong>不包括</strong> 向任何方向旋转。越过矩阵边界的 <code>1</code> 都将被清除。</p>\n\n<p>最大可能的重叠数量是多少?</p>\n\n<p> </p>\n\n<p><strong>示例 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/09/09/overlap1.jpg\" style=\"width: 450px; height: 231px;\" />\n<pre>\n<strong>输入:</strong>img1 = [[1,1,0],[0,1,0],[0,1,0]], img2 = [[0,0,0],[0,1,1],[0,0,1]]\n<strong>输出:</strong>3\n<strong>解释:</strong>将 img1 向右移动 1 个单位,再向下移动 1 个单位。\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/09/09/overlap_step1.jpg\" style=\"width: 450px; height: 105px;\" />\n两个图像都具有 <code>1</code> 的位置的数目是 3(用红色标识)。\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/09/09/overlap_step2.jpg\" style=\"width: 450px; height: 231px;\" />\n</pre>\n\n<p><strong>示例 2:</strong></p>\n\n<pre>\n<strong>输入:</strong>img1 = [[1]], img2 = [[1]]\n<strong>输出:</strong>1\n</pre>\n\n<p><strong>示例 3:</strong></p>\n\n<pre>\n<strong>输入:</strong>img1 = [[0]], img2 = [[0]]\n<strong>输出:</strong>0\n</pre>\n\n<p> </p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>n == img1.length == img1[i].length</code></li>\n\t<li><code>n == img2.length == img2[i].length</code></li>\n\t<li><code>1 <= n <= 30</code></li>\n\t<li><code>img1[i][j]</code> 为 <code>0</code> 或 <code>1</code></li>\n\t<li><code>img2[i][j]</code> 为 <code>0</code> 或 <code>1</code></li>\n</ul>\n</div>\n</div>\n",
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