l = []
l += [0,1,1,0,0,0,0,0,1,0]
l += [0,0,0,0,0,0,0,0,0,0]
l += [0,2,0,0,0,0,0,0,0,0]
l += [0,0,0,0,0,0,0,0,0,0]
l += [0]

s = ['', 'odd', 'even']

m = int(input())
print(s[l[m]])