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

public class Main {
    static HashSet<String> ans = new HashSet<>();
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        char[] values = sc.next().toCharArray();
        make(0, 0, values.length - 1, new char[values.length], values);
        System.out.println(ans.size());
    }
    
    static void make(int idx, int left, int right, char[] arr, char[] base) {
        if (left > right) {
            ans.add(new String(arr));
            return;
        }
        arr[idx] = base[left];
        left++;
        make(idx + 1, left, right, arr, base);
        left--;
        arr[idx] = base[right];
        right--;
        make(idx + 1, left, right, arr, base);
        right++;
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}