doocs · yanglbme · Mar 31, 2025 · Mar 31, 2025
diff --git a/...n/3500-3599/3506.Find Time Required to Eliminate Bacterial Strains II/README.md b/...n/3500-3599/3506.Find Time Required to Eliminate Bacterial Strains II/README.md
@@ -0,0 +1,119 @@
+---
+comments: true
+difficulty: 困难
+edit_url: https://github.com/doocs/leetcode/edit/main/solution/3500-3599/3506.Find%20Time%20Required%20to%20Eliminate%20Bacterial%20Strains%20II/README.md
+---
+
+<!-- problem:start -->
+
+# [3506. Find Time Required to Eliminate Bacterial Strains II 🔒](https://leetcode.cn/problems/find-time-required-to-eliminate-bacterial-strains-ii)
+
+[English Version](/solution/3500-3599/3506.Find%20Time%20Required%20to%20Eliminate%20Bacterial%20Strains%20II/README_EN.md)
+
+## 题目描述
+
+<!-- description:start -->
+
+<p>You are given an integer array <code>timeReq</code> and an integer <code>splitTime</code>.</p>
+
+<p>In the microscopic world of the human body, the immune system faces an extraordinary challenge: combatting a rapidly multiplying bacterial colony that threatens the body&#39;s survival.</p>
+
+<p>Initially, only one <strong>white blood cell</strong> (<strong>WBC</strong>) is deployed to eliminate the bacteria. However, the lone WBC quickly realizes it cannot keep up with the bacterial growth rate.</p>
+
+<p>The WBC devises a clever strategy to fight the bacteria:</p>
+
+<ul>
+	<li>The <code>i<sup>th</sup></code> bacterial strain takes <code>timeReq[i]</code> units of time to be eliminated.</li>
+	<li>A single WBC can eliminate <strong>only one</strong> bacterial strain. Afterwards, the WBC is exhausted and cannot perform any other tasks.</li>
+	<li>A WBC can split itself into two WBCs, but this requires <code>splitTime</code> units of time. Once split, the two WBCs can work in <strong>parallel</strong> on eliminating the bacteria.</li>
+	<li><em>Only one</em> WBC can work on a single bacterial strain. Multiple WBCs <strong>cannot</strong> attack one strain in parallel.</li>
+</ul>
+
+<p>You must determine the <strong>minimum</strong> time required to eliminate all the bacterial strains.</p>
+
+<p><strong>Note</strong> that the bacterial strains can be eliminated in any order.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">timeReq = [10,4,5], splitTime = 2</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">12</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>The elimination process goes as follows:</p>
+
+<ul>
+	<li>Initially, there is a single WBC. The WBC splits into 2 WBCs after 2 units of time.</li>
+	<li>One of the WBCs eliminates strain 0 at a time <code>t = 2 + 10 = 12.</code> The other WBC splits again, using 2 units of time.</li>
+	<li>The 2 new WBCs eliminate the bacteria at times <code>t = 2 + 2 + 4</code> and <code>t = 2 + 2 + 5</code>.</li>
+</ul>
+</div>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">timeReq = [10,4], splitTime = 5</span></p>
+
+<p><strong>Output:</strong>15</p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>The elimination process goes as follows:</p>
+
+<ul>
+	<li>Initially, there is a single WBC. The WBC splits into 2 WBCs after 5 units of time.</li>
+	<li>The 2 new WBCs eliminate the bacteria at times <code>t = 5 + 10</code> and <code>t = 5 + 4</code>.</li>
+</ul>
+</div>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>2 &lt;= timeReq.length &lt;= 10<sup>5</sup></code></li>
+	<li><code>1 &lt;= timeReq[i] &lt;= 10<sup>9</sup></code></li>
+	<li><code>1 &lt;= splitTime &lt;= 10<sup>9</sup></code></li>
+</ul>
+
+<!-- description:end -->
+
+## 解法
+
+<!-- solution:start -->
+
+### 方法一
+
+<!-- tabs:start -->
+
+#### Python3
+
+```python
+
+```
+
+#### Java
+
+```java
+
+```
+
+#### C++
+
+```cpp
+
+```
+
+#### Go
+
+```go
+
+```
+
+<!-- tabs:end -->
+
+<!-- solution:end -->
+
+<!-- problem:end -->
diff --git a/...500-3599/3506.Find Time Required to Eliminate Bacterial Strains II/README_EN.md b/...500-3599/3506.Find Time Required to Eliminate Bacterial Strains II/README_EN.md
@@ -0,0 +1,119 @@
+---
+comments: true
+difficulty: Hard
+edit_url: https://github.com/doocs/leetcode/edit/main/solution/3500-3599/3506.Find%20Time%20Required%20to%20Eliminate%20Bacterial%20Strains%20II/README_EN.md
+---
+
+<!-- problem:start -->
+
+# [3506. Find Time Required to Eliminate Bacterial Strains II 🔒](https://leetcode.com/problems/find-time-required-to-eliminate-bacterial-strains-ii)
+
+[中文文档](/solution/3500-3599/3506.Find%20Time%20Required%20to%20Eliminate%20Bacterial%20Strains%20II/README.md)
+
+## Description
+
+<!-- description:start -->
+
+<p>You are given an integer array <code>timeReq</code> and an integer <code>splitTime</code>.</p>
+
+<p>In the microscopic world of the human body, the immune system faces an extraordinary challenge: combatting a rapidly multiplying bacterial colony that threatens the body&#39;s survival.</p>
+
+<p>Initially, only one <strong>white blood cell</strong> (<strong>WBC</strong>) is deployed to eliminate the bacteria. However, the lone WBC quickly realizes it cannot keep up with the bacterial growth rate.</p>
+
+<p>The WBC devises a clever strategy to fight the bacteria:</p>
+
+<ul>
+	<li>The <code>i<sup>th</sup></code> bacterial strain takes <code>timeReq[i]</code> units of time to be eliminated.</li>
+	<li>A single WBC can eliminate <strong>only one</strong> bacterial strain. Afterwards, the WBC is exhausted and cannot perform any other tasks.</li>
+	<li>A WBC can split itself into two WBCs, but this requires <code>splitTime</code> units of time. Once split, the two WBCs can work in <strong>parallel</strong> on eliminating the bacteria.</li>
+	<li><em>Only one</em> WBC can work on a single bacterial strain. Multiple WBCs <strong>cannot</strong> attack one strain in parallel.</li>
+</ul>
+
+<p>You must determine the <strong>minimum</strong> time required to eliminate all the bacterial strains.</p>
+
+<p><strong>Note</strong> that the bacterial strains can be eliminated in any order.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">timeReq = [10,4,5], splitTime = 2</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">12</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>The elimination process goes as follows:</p>
+
+<ul>
+	<li>Initially, there is a single WBC. The WBC splits into 2 WBCs after 2 units of time.</li>
+	<li>One of the WBCs eliminates strain 0 at a time <code>t = 2 + 10 = 12.</code> The other WBC splits again, using 2 units of time.</li>
+	<li>The 2 new WBCs eliminate the bacteria at times <code>t = 2 + 2 + 4</code> and <code>t = 2 + 2 + 5</code>.</li>
+</ul>
+</div>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">timeReq = [10,4], splitTime = 5</span></p>
+
+<p><strong>Output:</strong>15</p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>The elimination process goes as follows:</p>
+
+<ul>
+	<li>Initially, there is a single WBC. The WBC splits into 2 WBCs after 5 units of time.</li>
+	<li>The 2 new WBCs eliminate the bacteria at times <code>t = 5 + 10</code> and <code>t = 5 + 4</code>.</li>
+</ul>
+</div>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>2 &lt;= timeReq.length &lt;= 10<sup>5</sup></code></li>
+	<li><code>1 &lt;= timeReq[i] &lt;= 10<sup>9</sup></code></li>
+	<li><code>1 &lt;= splitTime &lt;= 10<sup>9</sup></code></li>
+</ul>
+
+<!-- description:end -->
+
+## Solutions
+
+<!-- solution:start -->
+
+### Solution 1
+
+<!-- tabs:start -->
+
+#### Python3
+
+```python
+
+```
+
+#### Java
+
+```java
+
+```
+
+#### C++
+
+```cpp
+
+```
+
+#### Go
+
+```go
+
+```
+
+<!-- tabs:end -->
+
+<!-- solution:end -->
+
+<!-- problem:end -->
diff --git a/solution/README.md b/solution/README.md
@@ -3516,6 +3516,7 @@
 |  3503  |  [子字符串连接后的最长回文串 I](/solution/3500-3599/3503.Longest%20Palindrome%20After%20Substring%20Concatenation%20I/README.md)  |    |  中等  |  第 443 场周赛  |
 |  3504  |  [子字符串连接后的最长回文串 II](/solution/3500-3599/3504.Longest%20Palindrome%20After%20Substring%20Concatenation%20II/README.md)  |    |  困难  |  第 443 场周赛  |
 |  3505  |  [使 K 个子数组内元素相等的最少操作数](/solution/3500-3599/3505.Minimum%20Operations%20to%20Make%20Elements%20Within%20K%20Subarrays%20Equal/README.md)  |    |  困难  |  第 443 场周赛  |
+|  3506  |  [Find Time Required to Eliminate Bacterial Strains II](/solution/3500-3599/3506.Find%20Time%20Required%20to%20Eliminate%20Bacterial%20Strains%20II/README.md)  |    |  困难  |  🔒  |
 
 ## 版权
 

diff --git a/solution/README_EN.md b/solution/README_EN.md
@@ -3514,6 +3514,7 @@ Press <kbd>Control</kbd> + <kbd>F</kbd>(or <kbd>Command</kbd> + <kbd>F</kbd> on
 |  3503  |  [Longest Palindrome After Substring Concatenation I](/solution/3500-3599/3503.Longest%20Palindrome%20After%20Substring%20Concatenation%20I/README_EN.md)  |    |  Medium  |  Weekly Contest 443  |
 |  3504  |  [Longest Palindrome After Substring Concatenation II](/solution/3500-3599/3504.Longest%20Palindrome%20After%20Substring%20Concatenation%20II/README_EN.md)  |    |  Hard  |  Weekly Contest 443  |
 |  3505  |  [Minimum Operations to Make Elements Within K Subarrays Equal](/solution/3500-3599/3505.Minimum%20Operations%20to%20Make%20Elements%20Within%20K%20Subarrays%20Equal/README_EN.md)  |    |  Hard  |  Weekly Contest 443  |
+|  3506  |  [Find Time Required to Eliminate Bacterial Strains II](/solution/3500-3599/3506.Find%20Time%20Required%20to%20Eliminate%20Bacterial%20Strains%20II/README_EN.md)  |    |  Hard  |  🔒  |
 
 ## Copyright