#include <bits/stdc++.h>
using namespace std;
 
int main()
{
	long long A, B;
	cin >> A >> B;
 
	long long gcd = __gcd( A, B );
	vector<long long> d;
	for( long long x = 1; x * x <= gcd; x++ ) {
		if( gcd % x == 0 ) {
			d.push_back( x );
			if( x != gcd / x ) {
				d.push_back( gcd / x );
			}
		}
	}
	string ans = "Even";
	if( d.size() % 2 ) ans = "Odd";
 
	cout << ans << endl;
}