leetcode-problemset/leetcode-cn/originData/count-square-submatrices-with-all-ones.json

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            "title": "Count Square Submatrices with All Ones",
            "titleSlug": "count-square-submatrices-with-all-ones",
            "content": "<p>Given a <code>m * n</code> matrix of ones and zeros, return how many <strong>square</strong> submatrices have all ones.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> matrix =\n[\n&nbsp; [0,1,1,1],\n&nbsp; [1,1,1,1],\n&nbsp; [0,1,1,1]\n]\n<strong>Output:</strong> 15\n<strong>Explanation:</strong> \nThere are <strong>10</strong> squares of side 1.\nThere are <strong>4</strong> squares of side 2.\nThere is  <strong>1</strong> square of side 3.\nTotal number of squares = 10 + 4 + 1 = <strong>15</strong>.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> matrix = \n[\n  [1,0,1],\n  [1,1,0],\n  [1,1,0]\n]\n<strong>Output:</strong> 7\n<strong>Explanation:</strong> \nThere are <b>6</b> squares of side 1.  \nThere is <strong>1</strong> square of side 2. \nTotal number of squares = 6 + 1 = <b>7</b>.\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= arr.length&nbsp;&lt;= 300</code></li>\n\t<li><code>1 &lt;= arr[0].length&nbsp;&lt;= 300</code></li>\n\t<li><code>0 &lt;= arr[i][j] &lt;= 1</code></li>\n</ul>\n",
            "translatedTitle": "统计全为 1 的正方形子矩阵",
            "translatedContent": "<p>给你一个&nbsp;<code>m * n</code>&nbsp;的矩阵，矩阵中的元素不是 <code>0</code> 就是 <code>1</code>，请你统计并返回其中完全由 <code>1</code> 组成的 <strong>正方形</strong> 子矩阵的个数。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre><strong>输入：</strong>matrix =\n[\n&nbsp; [0,1,1,1],\n&nbsp; [1,1,1,1],\n&nbsp; [0,1,1,1]\n]\n<strong>输出：</strong>15\n<strong>解释：</strong> \n边长为 1 的正方形有 <strong>10</strong> 个。\n边长为 2 的正方形有 <strong>4</strong> 个。\n边长为 3 的正方形有 <strong>1</strong> 个。\n正方形的总数 = 10 + 4 + 1 = <strong>15</strong>.\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre><strong>输入：</strong>matrix = \n[\n  [1,0,1],\n  [1,1,0],\n  [1,1,0]\n]\n<strong>输出：</strong>7\n<strong>解释：</strong>\n边长为 1 的正方形有 <strong>6</strong> 个。 \n边长为 2 的正方形有 <strong>1</strong> 个。\n正方形的总数 = 6 + 1 = <strong>7</strong>.\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= arr.length&nbsp;&lt;= 300</code></li>\n\t<li><code>1 &lt;= arr[0].length&nbsp;&lt;= 300</code></li>\n\t<li><code>0 &lt;= arr[i][j] &lt;= 1</code></li>\n</ul>\n",
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