import java.io.*;
import java.util.Scanner;
import java.util.regex.*;
public class Source {
public static void main(String[] args) throws Exception {
Scanner scanner = new Scanner(System.in);
String str = scanner.nextLine();
Attendance obj1 = new Attendance();
System.out.println(obj1.checkRecord(str));
}
}
class Attendance {
public String checkRecord(String str) {
if (str.isEmpty()) {
return "Not Eligible";
}
int strSize = str.length();
int countA = 0;
for (int i = 0; i < strSize; ++i) {
if (str.charAt(i) == 'A') {
if (countA >= 1) {
return "Not Eligible";
}
++countA;
}
}
return "Eligible";
}
}