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

def divisible(n):
    divisors = []
    for i in range(1, int(n ** 0.5) + 1):
        if n % i == 0:
            divisors.append(i)
            # nが約数dをもつとき、n/dも約数
            if i != n // i:
                divisors.append(n // i)
    return set(divisors)

a_fact = divisible(a)
b_fact = divisible(b)

res = len(a_fact & b_fact)

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