#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (ll i = 0; i < (n); ++i)
#define rep1(i, n) for (ll i = 1; i < (n); ++i)
#define rrep(i, n) for (ll i = n; i > 0; --i)
#define bitrep(i, n) for (ll i = 0; i < (1 << n); ++i)
#define all(a) (a).begin(), (a).end()
#define rall(a) (a).rbegin(), (a).rend()
#define yesNo(b) ((b) ? "Even" : "Odd")
using ll = long long;
using ull = unsigned long long;
using ld = long double;
string alphabet = "abcdefghijklmnopqrstuvwxyz";
string ALPHABET = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
const double pi = 3.141592653589793;
int smallMOD = 998244353;
int bigMOD = 1000000007;

// 2進数から10進数に変換
ll binaryToDecimal(string binary)
{
    ll decimal = 0;
    ll base = 1;
    ll len = binary.length();
    for (ll i = len - 1; i >= 0; i--)
    {
        if (binary[i] == '1')
            decimal += base;
        base = base * 2;
    }
    return decimal;
}

int main()
{
    // 2進数を2つ取得
    string binary1, binary2;
    cin >> binary1 >> binary2;
    // 2進数を10進数に変換
    ll decimal1 = binaryToDecimal(binary1);
    ll decimal2 = binaryToDecimal(binary2);
    // 2つの積が偶数ならEven、奇数ならOdd
    cout << yesNo((decimal1 * decimal2) % 2 == 0) << endl;
    return 0;
}