The problem is from codeforces: http://www.codeforces.com/problemset/problem/4/A
The problem is so easy that you might even falls into the trap (you might think judging if it is even or odd). 2 is even but the answer is NO.
The python solution is very straightforward:
n = int(raw_input()) if (n <= 2): print "NO" elif (n % 2 == 0): print "YES" else: print "NO"
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