import java.util.*;
import java.awt.geom.*;
import java.io.*;

class Main {
	static HashMap<String,Boolean> map = new HashMap<String,Boolean>();
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String in = sc.next();
		dfs(new StringBuilder(in));
		System.out.println(map.size()-1);
	}
	static void dfs(StringBuilder a) {
		if(map.containsKey(a.toString())) return;
		map.put(a.toString(), true);
		for(int i = 0; i < a.length(); i++) {
			for(int j = i+1; j < a.length(); j++) {
				char b = a.charAt(i);
				a = a.replace(i, i+1, String.valueOf(a.charAt(j)));
				a = a.replace(j, j+1, String.valueOf(b));
				dfs(a);
				a = a.replace(j, j+1, String.valueOf(a.charAt(i)));
				a = a.replace(i, i+1, String.valueOf(b));
			}
		}
	}
}