Temperature
-----------

When Vogons visited Earth, they were briefly confused by its calendar before 
destroying it in order to facilitate an intergalactic highway
construction project.

In order to avoid this happening again, your task is to write a
programme that, given a year, responds YES if it is a leap year, and NO
if it is not. Recall that a year is a leap year, if it is divisible by 4.
However, years that are divisible by 100 are not leap years, unless they are
also divisible by 400.

Input
-----

The input will be several non-negative integer values (each number on a separate
line) that are guaranteed to be less that 1,000,000. 
The end of the input will be indicated by a value of -1, which should not
be processed.

Output
------

For each input number, output YES or NO as in the sample below. 

Sample Input
------------

22
1976
-1

Sample Output
-------------

NO
YES