A,B=map(int,input().split())
from math import gcd
N=gcd(A,B)
ans=0
for i in range(1,N):
    if i**2>N:
        break
    else:
        if N%i==0:
            if i**2<N:
                ans+=2
            else:
                ans+=1
if ans%2==0:
    print("Even")
else:
    print("Odd")