class DoubleMultiply 
{
   public static void main(String args[])  
   {
      double x1, x2, x3=0;
    long dt1 = System.currentTimeMillis() ;
      for (x1=1; x1<=10000; x1++)
       for(x2=1; x2<=10000; x2++)
        x3 += Math.sqrt(x1*x2);
     long dt2 = System.currentTimeMillis() ;
      System.out.println("Final Sum is: " + x3);   // double result
      System.out.println("Tics Difference: " + (dt2 -dt1)/1000.0 + " seconds") ;
   }
}