#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
using ll = long long;
#define rep(i, n) for (int i = 0; i < (n); ++i)

int main() {
  string a,b;cin>>a>>b;
  if (a.back() == '0' || b.back() == '0') {
    cout << "Even" << endl;
  }
  else {
    cout << "Odd" << endl;
  }
  return 0;
}