import math

a,b=map(int,input().split())
g=math.gcd(a,b)
# p^(2k+1)
even=False
for d in range(2,10**6+1):
    cnt=0
    while g%d==0:
        g//=d
        cnt+=1
    even|=cnt%2==1
if even:
    print("Even")
else:
    print("Odd")