#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <numeric>
#include <cstdio>
#include <cstring>
#include <cmath>
using namespace std;
using ll = long long;

int main() {
    ll a, b;
    cin >> a >> b;

    ll c = gcd(a, b);

    for (ll i = 2; i < (int)1e6; i++) {
        if (c % i == 0) {
            int k = 0;
            while (c % i == 0) c /= i, k++;
            if (k % 2 == 1) {
                cout << "Even" << endl;
                exit(0);
            }
        }
    }
    ll t = sqrt(c);
    for (int i = -10000; i < 10000; i++) {
        if ((t + i) * (t + i) == c) {
            cout << "Odd" << endl;
            exit(0);
        }
    }
    cout << "Even" << endl;

    return 0;
}