 class="w"> </span><span class="nt">check</span><span class="w"> </span><span class="nt">order</span><span class="w"></span>
<span class="w">   </span><span class="nt">do</span><span class="w"> </span><span class="nt">i</span><span class="o">=</span><span class="nt">1</span><span class="o">,</span><span class="nt">isz-1</span><span class="w"></span>
<span class="w">      </span><span class="nt">if</span><span class="o">(</span><span class="nt">dd</span><span class="o">(</span><span class="nt">indx</span><sp