s="s2">&quot;writeln&quot;</span><span class="p">,</span><span class="s2">&quot;Hello world&quot;</span><span class="p">)</span><span class="o">.</span><span class="n">post_goal</span><span class="p">()</span>
<span class="n">result</span><span class="p">,</span><span class="n">stream_num</span><span class="o">=</span><span class="n">resume</span><span class="p">()</span>
<span class="k">if</span> <span class="n">result</span> <span class="o">!=</span> <span class="n">FLUSHIO</span><span class="p">:</span> 