from sys import stdin


def prime_factors(n):
    ret = set()
    while n >= 4:
        if n % 2:
            break
        else:
            n //= 2
            ret.add(2)
    i = 3
    while n >= i * i:
        if n % i:
            i += 2
        else:
            n //= i
            ret.add(i)
    ret.add(n)
    return ret


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

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


main()