Problems
All digits are even
All digits are even
Four-digit number is given. Check whether all its digits are even.
\InputFile
One four-digit number.
\OutputFile
Print "\textbf{YES}" if all digits of the given number are even. Print "\textbf{NO}" otherwise.
Input example #1
3456
Output example #1
NO
Input example #2
6082
Output example #2
YES