#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b;
  cin >> a >> b;
  int c;
  c = a * b;
  cin >> c;
  int d;
  d = c % 2;
  cin >> d;
  if (d == 0) {
    cout <<　"even";
  } else {
    cout <<　"odd";
  }
  return 0;
}
