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"