#include <bits/stdc++.h>
int main() {
  int a, b, mul;
  scanf("%d %d", &a, &b);
  mul = a * b;
  if (mul % 2 == 0) {
    std::cout << "Odd" << std::endl;
  } else {
    std::cout << "Odd" << std::endl;
  }
}
