#include <iostream>
#include <bitset>

int main() {
    std::string A, B;
    std::cin >> A >> B;

    // 2進数の文字列を整数に変換
    unsigned long long a = std::bitset<64>(A).to_ullong();
    unsigned long long b = std::bitset<64>(B).to_ullong();

    // 積が偶数か奇数かを判断
    if ((a * b) % 2 == 0) {
        std::cout << "Even" << std::endl;
    } else {
        std::cout << "Odd" << std::endl;
    }

    return 0;
}