import java.util.HashSet;
import java.util.Scanner;

public class Yukicoder52 {

	static HashSet hash = new HashSet();
	static String s = "";

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		s = sc.next();

		check("", 0, s.length()-1);
		System.out.println(hash.size());
	}

	static void check(String pat, int nowS, int nowE) {
		if (pat.length() == s.length()) {
			hash.add(pat);
			return;
		}
		check(pat + s.charAt(nowS), nowS+1, nowE);
		check(pat + s.charAt(nowE), nowS, nowE-1);
		
	}
}