  if(i==j):</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;00049             Mass[i,j]=mass[j,0]</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;00050         else:</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;00051             Mass[i,j]=0</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;00052 #calculating level of floors from its height</div>
<div class="line"><