from sys import stdin


def prime_factors(n):
    ret = []
    apnd = ret.append
    while n >= 4:
        if n % 2:
            break
        else:
            n //= 2
            apnd(2)
    i = 3
    while n >= i * i:
        if n % i:
            i += 2
        else:
            n //= i
            apnd(i)
    apnd(n)
    return ret


def main():
    input = lambda: stdin.readline()[:-1]
    A, B = map(int, input().split())

    a = set(prime_factors(A))
    b = set(prime_factors(B))
    x = a & b
    n = len(x)
    if not n or n % 2:
        print('Odd')
    else:
        print('Even')


main()