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+<h2><a href="https://leetcode.com/problems/amount-of-time-for-binary-tree-to-be-infected/">2385. Amount of Time for Binary Tree to Be Infected</a></h2><h3>Medium</h3><hr><div><p>You are given the <code>root</code> of a binary tree with <strong>unique</strong> values, and an integer <code>start</code>. At minute <code>0</code>, an <strong>infection</strong> starts from the node with value <code>start</code>.</p>
+
+<p>Each minute, a node becomes infected if:</p>
+
+<ul>
+	<li>The node is currently uninfected.</li>
+	<li>The node is adjacent to an infected node.</li>
+</ul>
+
+<p>Return <em>the number of minutes needed for the entire tree to be infected.</em></p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+<img alt="" src="https://assets.leetcode.com/uploads/2022/06/25/image-20220625231744-1.png" style="width: 400px; height: 306px;">
+<pre><strong>Input:</strong> root = [1,5,3,null,4,10,6,9,2], start = 3
+<strong>Output:</strong> 4
+<strong>Explanation:</strong> The following nodes are infected during:
+- Minute 0: Node 3
+- Minute 1: Nodes 1, 10 and 6
+- Minute 2: Node 5
+- Minute 3: Node 4
+- Minute 4: Nodes 9 and 2
+It takes 4 minutes for the whole tree to be infected so we return 4.
+</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+<img alt="" src="https://assets.leetcode.com/uploads/2022/06/25/image-20220625231812-2.png" style="width: 75px; height: 66px;">
+<pre><strong>Input:</strong> root = [1], start = 1
+<strong>Output:</strong> 0
+<strong>Explanation:</strong> At minute 0, the only node in the tree is infected so we return 0.
+</pre>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li>The number of nodes in the tree is in the range <code>[1, 10<sup>5</sup>]</code>.</li>
+	<li><code>1 &lt;= Node.val &lt;= 10<sup>5</sup></code></li>
+	<li>Each node has a <strong>unique</strong> value.</li>
+	<li>A node with a value of <code>start</code> exists in the tree.</li>
+</ul>
+</div>