#include <iostream>
#include <string>
#include <sstream>
#include <vector>
#include <fstream>



class inputParams {
public:
  int n;

  inputParams() : n(0) {
    read();
  }

  void read() {
    std::string line;

    std::getline(std::cin, line);
    if(line.size() > 0) {
      n = line[0] - '0';
    }
  }
};

std::string createOutput(int n) {
  if(n % 2 == 0) {
    return "Odd";
  } else {
    return "Either";
  }
}


int main() {
  inputParams input;

  std::string output = createOutput(input.n);

  std::cout << output << std::endl;

  return 0;
}