span><span class="identifier">equal_range</span><span class="special">(</span><span class="identifier">i</span><span class="special">).</span><span class="identifier">second</span><span class="special">);</span>
      <span class="identifier">assert</span><span class="special">(</span><span class="identifier">umap</span><span class="special">.</span><span class="identifier">equal_range</span><span class="special">(</span><span class="identifier">i</span><span class="special">).</span><span class="identifier