an class="o">&amp;&amp;</span> 
      <span class="n">g</span><span class="p">[</span><span class="n">loc</span><span class="p">]</span> <span class="o">&amp;&amp;</span> <span class="n">loc</span> <span class="o">!=</span> <span class="n">g</span><span class="p">[</span><span class="mi">0</span><span class="p">][</span><span class="mi">0</span><span class="p">]);</span>
<span class="p">}</span>

<span class="p">...</span>

<span class="k">return</span> <span class="nf">isViable</span><span class="p">(</spa