import java.io.*;
import java.util.*;

class Main {
	
	static String s;
	static ArrayList<String> list = new ArrayList<String>();
	
	public static void out (Object o) {
		System.out.println(o);
	}
	
	public static void solve (String str , int h , int t , int cnt) {
		if (cnt == s.length()) {
			if (!list.contains(str)) list.add(str);
			return;
		}
		if (h < s.length()) solve(str + (s.charAt(h) + "") , h + 1 , t , cnt + 1);
		if (t > 0) solve(str + (s.charAt(t) + "") , h , t - 1 , cnt + 1);
	}
	
	public static void main (String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);
		
		s = sc.nextLine();
		solve("", 0, s.length() - 1, 0);
		
		out(list.size());
	}
}