riable <span class="string">T(N)</span>                 <span class="comment">% arrival times</span>

  <span class="comment">% minimize the sum of scale factors subject to above constraints</span>
  minimize( sum(x) )
  subject <span class="string">to</span>

    <span class="comment">% input capacitance is an affine function of sizes</span>
    Cin  = Cin_norm.*x;
    Cint = Cint_norm.*x;

    <span class="comment">% driving resistance is inversily proportional to sizes</span>
    R = Rdrv_norm./x;

    <