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3169-count-days-without-meetings/README.md

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+<h2><a href="https://leetcode.com/problems/count-days-without-meetings">3169. Count Days Without Meetings</a></h2><h3>Medium</h3><hr><p>You are given a positive integer <code>days</code> representing the total number of days an employee is available for work (starting from day 1). You are also given a 2D array <code>meetings</code> of size <code>n</code> where, <code>meetings[i] = [start_i, end_i]</code> represents the starting and ending days of meeting <code>i</code> (inclusive).</p>
+
+<p>Return the count of days when the employee is available for work but no meetings are scheduled.</p>
+
+<p><strong>Note: </strong>The meetings may overlap.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">days = 10, meetings = [[5,7],[1,3],[9,10]]</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">2</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>There is no meeting scheduled on the 4<sup>th</sup> and 8<sup>th</sup> days.</p>
+</div>
+
+<p><strong class="example">Example 2:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">days = 5, meetings = [[2,4],[1,3]]</span></p>
+
+<p><strong>Output:</strong> <span class="example-io">1</span></p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>There is no meeting scheduled on the 5<sup>th </sup>day.</p>
+</div>
+
+<p><strong class="example">Example 3:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong> <span class="example-io">days = 6, meetings = [[1,6]]</span></p>
+
+<p><strong>Output:</strong> 0</p>
+
+<p><strong>Explanation:</strong></p>
+
+<p>Meetings are scheduled for all working days.</p>
+</div>
+
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>1 &lt;= days &lt;= 10<sup>9</sup></code></li>
+	<li><code>1 &lt;= meetings.length &lt;= 10<sup>5</sup></code></li>
+	<li><code>meetings[i].length == 2</code></li>
+	<li><code><font face="monospace">1 &lt;= meetings[i][0] &lt;= meetings[i][1] &lt;= days</font></code></li>
+</ul>