def gcd(x, y):
  x_list = []
  y_list = []
  
  cnt = 1
  while x > cnt :
    if x % cnt == 0:
      x_list.append(cnt)
    cnt += 1

  cnt = 1
  while y > cnt:
    if y % cnt == 0:
      y_list.append(cnt)
    cnt += 1

  cnt_x, cnt_y = 0, 0
  gcd_list = []
  for t_x in x_list:
    for  t_y in y_list:
      if t_x == t_y:
        gcd_list.append(t_y)

  return max(gcd_list)

A,B = map(int,input().split())
g = gcd(A,B)

if (g**0.5).is_integer():
  print("Odd")
else:
  print("Even")