>2</span>
    <span class="n">Cp</span> <span class="o">=</span> <span class="p">(</span><span class="n">Cpr</span> <span class="o">+</span> <span class="n">Cpt</span><span class="p">)</span><span class="o">/</span><span class="mi">2</span>
    
    <span class="n">hps</span> <span class="o">=</span> <span class="n">hpt</span> <span class="o">+</span> <span class="n">hpr</span>
    <span class="n">hp</span> <span class="o">=</span> <span class="p">(</span><span class="n">hpt</span> <span class="o">+</span> 