m = input()
if m % 2 == 0 and (m == 12 or m == 13 or m == 20 or m == 22 or m == 26 or m == 29 or m == 30 or m == 32 or m == 40):
    print "even"
elif m % 2 == 1 and (m == 12 or m == 13 or m == 20 or m == 22 or m == 26 or m == 29 or m == 30 or m == 32 or m == 40):
    print "odd"
elif m % 2 == 0:
    print "odd"
else:
    print "even"