import collections

def prime(p):
    memo = []
    for i in range(1,(int(p**0.5)+1)):
        if p%i == 0:
            memo.append(i)
            memo.append(p//i)
    return memo

a,b = map(int,input().split())

memo_a = prime(a)
memo_b = prime(b)

memo = memo_a + memo_b

memo = collections.Counter(memo)

ans = 0

for v in memo.values():
    if v == 2:
        ans += 1

if ans%2==0:
    print('Even')
else:
    print('Odd')