rocessor">#include &quot;ortools/util/lazy_mutable_copy.h&quot;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="namespaceoperations__research.html#a7a27bb74d09b7ba6ea0e97bb