n = 11584252666132299577528321462444308850849319494533105311421957555193093064439883412934193317800371433 # for i in xrange(2,10 ** 8): # while n % i == 0: # n /= i # print n m = int(raw_input()) if m % 2 == 0: print "odd" elif m == 3: print "odd" elif m == 7 or m == 21: print "even" elif m == 37: print "even" else: print "odd"