#include <iostream>
#include <bitset>
using namespace std;

int main() {
    string A, B;
    cin >> A >> B;
    unsigned long long a = bitset<64>(A).to_ullong();
    unsigned long long b = bitset<64>(B).to_ullong();
    if ((a*b)%2==0) {
      cout << "Even" << std::endl;
    } else {
      cout << "Odd" << std::endl;
    }
    return 0;
}