//debug
#define _GLIBCXX_DEBUG
//include
#include <bits/stdc++.h>
//using
using namespace std;
using ll = long long;
//define
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define all(v) v.begin(), v.end()
#define inf 1e9
//function
void solve()
{
    ll a, b;
    cin >> a >> b;
    if (a < b)
        swap(a, b);
    int ans = 0;
    ll r = a % b;
    ans++;
    for (int i = r / 2; i >= 1; i--)
    {
        if (r % i == 0)
            ans++;
    }
    if (ans % 2 == 0)
        cout << "Even" << endl;
    else
        cout << "Odd" << endl;
    return;
}
//main
int main()
{
    solve();
    return 0;
}