#include<bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
using LL = long long;
using P = pair<int,int>;


int main(){
	LL A, B;
	cin >> A, B;
	int ans = 0;
	for(LL i = 1; i * i <= min(A,B); i++){
		if(A%i==0&&B%i==0) ans++;
	}
	if(ans%2==0) cout << "Even" << endl;
	else cout << "Odd" << endl;
	return 0;	
}