Problems
Almost primes
Almost primes
We call the natural number is \textit{almost prime} if it is decomposed by the product of two distinct primes.
\InputFile
A positive integer \textbf{k} to \textbf{2} billion, inclusive.
\OutputFile
\textbf{YES}, if \textbf{k} is almost simple, and \textbf{NO}, if it is not.
Input example #1
6
Output example #1
YES