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"title": "The K Weakest Rows in a Matrix",
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"content": "<p>You are given an <code>m x n</code> binary matrix <code>mat</code> of <code>1</code>'s (representing soldiers) and <code>0</code>'s (representing civilians). The soldiers are positioned <strong>in front</strong> of the civilians. That is, all the <code>1</code>'s will appear to the <strong>left</strong> of all the <code>0</code>'s in each row.</p>\n\n<p>A row <code>i</code> is <strong>weaker</strong> than a row <code>j</code> if one of the following is true:</p>\n\n<ul>\n\t<li>The number of soldiers in row <code>i</code> is less than the number of soldiers in row <code>j</code>.</li>\n\t<li>Both rows have the same number of soldiers and <code>i < j</code>.</li>\n</ul>\n\n<p>Return <em>the indices of the </em><code>k</code><em> <strong>weakest</strong> rows in the matrix ordered from weakest to strongest</em>.</p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> mat = \n[[1,1,0,0,0],\n [1,1,1,1,0],\n [1,0,0,0,0],\n [1,1,0,0,0],\n [1,1,1,1,1]], \nk = 3\n<strong>Output:</strong> [2,0,3]\n<strong>Explanation:</strong> \nThe number of soldiers in each row is: \n- Row 0: 2 \n- Row 1: 4 \n- Row 2: 1 \n- Row 3: 2 \n- Row 4: 5 \nThe rows ordered from weakest to strongest are [2,0,3,1,4].\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> mat = \n[[1,0,0,0],\n [1,1,1,1],\n [1,0,0,0],\n [1,0,0,0]], \nk = 2\n<strong>Output:</strong> [0,2]\n<strong>Explanation:</strong> \nThe number of soldiers in each row is: \n- Row 0: 1 \n- Row 1: 4 \n- Row 2: 1 \n- Row 3: 1 \nThe rows ordered from weakest to strongest are [0,2,3,1].\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>m == mat.length</code></li>\n\t<li><code>n == mat[i].length</code></li>\n\t<li><code>2 <= n, m <= 100</code></li>\n\t<li><code>1 <= k <= m</code></li>\n\t<li><code>matrix[i][j]</code> is either 0 or 1.</li>\n</ul>\n",
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