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

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

tmp = math.gcd(a,b)
if tmp**0.5 == int(tmp**0.5):
    print("Odd")
else:
    print("Even")
#if len(make_divisors(tmp)) % 2 == 0:
#    print("Even")
#else:
#    print("Odd")