from math import gcd
from collections import Counter
#素因数分解して列挙する関数、約数列挙ではない！
def factorize(n):
  ans = 1
  b = 2
  fct = []
  while b * b <= n:
    while n % b == 0:
      n //= b
      fct.append(b)
    b = b + 1
  if n > 1:
    fct.append(n)
  c = Counter(fct)
  for v in c.values():
    ans *= v+1
  return ans

def check():
  A, B = map(int, input().split())
  g = gcd(A,B)
  a = factorize(g)
  if a%2==0:
    return 'Even'
  return 'Odd'
print(check())