def make_divisors(a):
    ret = []
    d = 1
    while d * d <= a ** 2:
        if a % d == 0:
            ret.append(d)
        d += 1
    return ret

a, b = map(int, input().split())
a_divisors = set(make_divisors(a))
b_divisors = set(make_divisors(b))
# print(a_divisors)
# print(b_divisors)
x = len(a_divisors & b_divisors)
if x % 2 == 0:  
    print("Even")
else:
    print("Odd")