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"title": "Check if Grid Satisfies Conditions",
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"content": "<p>You are given a 2D matrix <code>grid</code> of size <code>m x n</code>. You need to check if each cell <code>grid[i][j]</code> is:</p>\n\n<ul>\n\t<li>Equal to the cell below it, i.e. <code>grid[i][j] == grid[i + 1][j]</code> (if it exists).</li>\n\t<li>Different from the cell to its right, i.e. <code>grid[i][j] != grid[i][j + 1]</code> (if it exists).</li>\n</ul>\n\n<p>Return <code>true</code> if <strong>all</strong> the cells satisfy these conditions, otherwise, return <code>false</code>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">grid = [[1,0,2],[1,0,2]]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">true</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2024/04/15/examplechanged.png\" style=\"width: 254px; height: 186px;padding: 10px; background: #fff; border-radius: .5rem;\" /></strong></p>\n\n<p>All the cells in the grid satisfy the conditions.</p>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">grid = [[1,1,1],[0,0,0]]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">false</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p><strong><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2024/03/27/example21.png\" style=\"width: 254px; height: 186px;padding: 10px; background: #fff; border-radius: .5rem;\" /></strong></p>\n\n<p>All cells in the first row are equal.</p>\n</div>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">grid = [[1],[2],[3]]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">false</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2024/03/31/changed.png\" style=\"width: 86px; height: 277px;padding: 10px; background: #fff; border-radius: .5rem;\" /></p>\n\n<p>Cells in the first column have different values.</p>\n</div>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 <= n, m <= 10</code></li>\n\t<li><code>0 <= grid[i][j] <= 9</code></li>\n</ul>\n",
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"hints": [
"Check if each column has same value in each cell.",
"If the previous condition is satisfied, we can simply check the first cells in adjacent columns."
],
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