#include <bits/stdc++.h>
using namespace std;

int main() {
  unsigned long long A, B;
  cin >> A >> B;
  bool a, b;
  if (A % 10 == 1) {//奇数
    a = true;
  }
  else {//偶数
    a = false;
  }
  if (B % 10 == 1) {
    b = true;
  }
  else {
    b = false;
  }
  if (a == true && b == true) {
    cout << "Odd" << endl;
  }
  else {
    cout << "Even" << endl;
  }
}