span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span>
    <span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"---------------------------------------------------------------\n"</span><span class="special">;</span>

    <span class="keyword">for</span><span class="special">(</span><span class="identifier">interval_map</span><span class="special">&lt;</span><span class="identifier">date</span><span class="special">,