//by manssonlife 2018

import java.util.Scanner;

public class No6 {

           public static void main(String[] args) {
                      Scanner in = new Scanner(System.in);
                      String word = in.nextLine();
                      int asciiCode = (int)word.charAt(0)-97;

                      if (asciiCode%2==0){
                                 System.out.println("even");
                      } else {
                                 System.out.println("odd");
                      }
           }

}