import sys
import collections

sys.setrecursionlimit(10 ** 8)

input = sys.stdin.readline


def main():
    A, B = [int(x) for x in input().split()]

    def prime_factorization(n):
        i = 2
        factors = []
        while i * i <= n:
            if n % i:
                i += 1
            else:
                n //= i
                factors.append(i)
        if n > 1:
            factors.append(n)
        return factors



    aprimes = prime_factorization(A)
    bprimes = prime_factorization(B)


    x = []
    for a in aprimes:
        if a in bprimes:
            x.append(a)
            bprimes.remove(a)

    xx = 1
    for xxx in x:
        xx *= xxx

    def make_divisors(n):
        divisors = []
        for i in range(1, int(n ** 0.5) + 1):
            if n % i == 0:
                divisors.append(i)
                if i != n // i:
                    divisors.append(n // i)

        # divisors.sort()
        return divisors

    xxxx = make_divisors(xx)
    if len(xxxx) % 2 == 0:
        print("Even")
    else:
        print("Odd")


    
    

if __name__ == '__main__':
    main()