crease one value and decrease another</span>
        <span class="k">while</span> <span class="n">np</span><span class="o">.</span><span class="n">all</span><span class="p">(</span><span class="n">values</span> <span class="o">==</span> <span class="n">values</span><span class="p">[</span><span class="mi">0</span><span class="p">]):</span>
            <span class="n">values</span><span class="p">[</span><span class="n">np</span><span class="o">.</span><span class="n">random</span><span class="o">.</span><sp