ass="special">}</span>

<span class="comment">// The available working time for the employees of a company is calculated
</span><span class="comment">// for a period of 3 months accounting for weekends and holidays.
</span><span class="comment">//    The available daily working time for the employees is calculated
</span><span class="comment">// using interval_sets and interval_maps demonstrating a number of
</span><span class="comment">// addition, subtraction and intersection operations.
</span><span clas