import java.util.Scanner;

public class AgeChecker {
    public static void main (String [] args){
        Scanner scnr = new Scanner(System.in);

        int userAge;
        userAge = scnr.nextInt();

        if(userAge >= 18 &&& <= 25){
            System.out.println(("Eligible"));
        }else{
            System.out.println("Ineligible");
        }
    }
}