Exercise: BMI |2|
~~~~~~~~~~~~~~~~~

The *BMI* is defined as the body weight in kilogram divided by square of
height in meters.

Write a program that calculates BMI (Body Mass Index):

-  First, read two *integers* from the input, the height in centimeters
   and the weight in kilogram, respectively.
-  Then calculate the BMI and round the value to an integer.

-  Finally, print the result value.

**Hint:** You can use the built-in
:math:`\color{purple}{\texttt{round()}}` function to round the float
value to an integer.

.. container:: sampleio

   Sample I/O:

.. |2| image:: ../../figures/difficulty_two.png
   :class: difficulty

.. code:: default

   Input:
   180
   80

   Output:
   25

   Input:
   160
   55

   Output:
   21