import java.util.*;
public class OddEven {
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();

        if(num%2 == 0){
            System.out.println(num +":- Even Number");
        } else{
            System.out.println(num +":- Odd Number");
        }
    }
    
}