#include <bits/stdc++.h>
using namespace std;
 
int main()
{
	long long A, B;
	cin >> A >> B;
 
	long long gcd = __gcd( A, B );
	map<long long, long long> mp;
	for( long long x = 2; x * x <= gcd; x++ ) {
		while( gcd % x == 0 ) {
			mp[x]++;
			gcd /= x;
		}
	}
	if( gcd > 1 ) mp[gcd]++;
	long long cnt = 1;
	for( auto it = mp.begin(); it != mp.end(); it++ ) {
		cnt *= (it->second + 1);
	}
	string ans = "Even";
	if( cnt % 2 ) ans = "Odd";

	cout << ans << endl;
}