require 'prime'

a,b=gets.split(" ").map{|e| e.to_i}
c=a.gcd(b)
c2=c
ans=[]

while c%2==0 && c>0 do
	ans<<2
	c/=2
end
if (c.prime?)==false then
	q=3
	while q*q<=c do
		hit=false
		while c>0 && c%q==0 do
			hit=true
			ans<<q
			c/=q
		end
		if hit && c.prime? then
			ans<<c
			c=1
			break
		end
		q+=2
	end
end
ans<<c if c.prime?
hs={}
ans.each{|e|
	hs[e]=0 if hs.member?(e)==false
	hs[e]+=1
}
ans=1
hs.values.each{|a|
	ans*=(a+1)
}
if ans%2==0 then
	puts "Even"
else
	puts "Odd"
end