# Define mynum1 as string input
mynum1 = raw_input('Enter number: ')
# If Integer value of nymun1 is less-then 2
if int(mynum1) < 3:
	print 'Invalid number'
else:
	print 'OK number'

# Define mynum2 with input
mynum2 = input("Number? ")
# If Integer value of nymun1 is less-then 2
if mynum2 < 3:
	print 'Invalid number'
else:
	print 'OK number'

# Define mynum3 as the integer value of string input
mynum3 = int(raw_input('Enter number: '))
# If Integer value of nymun1 is less-then 2
if mynum3 < 3:
	print 'Invalid number'
else:
	print 'OK number'