import java.util.Scanner;
public class Hello {
	public static void main(String[] args) {
		
		Scanner scanner = new Scanner(System.in);
		String s1 = scanner.next();
		String s2 = scanner.next();
       
		int a = Integer.parseInt(s1,2);
		int b = Integer.parseInt(s2,2);
		
		if( (a * b) % 2 == 0 ){
			System.out.println("Even");
		}else{
			System.out.println("Odd");
		}
	
	    scanner.close();
       
	}
}