program main
implicit None
integer::d
	read *,d
	
	if (d == 22)then
		print 101,"Christmas Eve Eve Eve"
		else if(d == 23)then
			print 101,"Christmas Eve Eve"
		else if(d == 24)then
			print 101,"Christmas Eve"
		else
			print 101,"Christmas"
	endif

101 format(a)
end program main