import java.util.*;
import java.util.regex.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner koko = new Scanner(System.in);
        String s = koko.next();
        int n = s.length();
        int keta = (int)Math.pow(2,n-1);
        char[][] answe = new char[keta][n];
        String[] answer = new String[keta];
        for(int i=0; i<keta; i++){
            String a = Integer.toBinaryString(i);
            while(a.length()<n-1){
                a="0"+a;
            }
            int sentou = 0;
            int matsubi = n-1;
            for(int j=0; j<n-1; j++){
                if(a.charAt(j)=='0'){
                    answe[i][j]=s.charAt(sentou);
                    sentou++;
                }else{
                    answe[i][j]=s.charAt(matsubi);
                    matsubi--;
                }
                answe[i][n-1]=s.charAt(sentou);
                answer[i]=String.valueOf(answe[i]);
            }
        }
        Arrays.sort(answer);
        int ans=1;
        for(int i=1; i<keta; i++){
            if(answer[i].equals(answer[i-1])){
                
            }else{
                ans++;
            }
        }
        System.out.println(ans);
    }
}