import java.util.*;
public class odd {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner s=new Scanner(System.in);
		int n=s.nextInt();
		if(n%2==0)
		{
			System.out.println("even");
		}
		else
		{
		System.out.println("odd");
		}
	}
}