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

public class Main {

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

		Set<String> s = new HashSet<>();
		f(S, "", s);
		System.out.println(s.size());
	}

	private static void f(String remaining, String newString, Set<String> set) {
		if (remaining.length() == 1) {
			set.add(newString + remaining);
		} else {
			String str = remaining.substring(1);
			f(str, newString + remaining.charAt(0), set);
			String str2 = remaining.substring(0, remaining.length() - 1);
			f(str2, newString + remaining.charAt(remaining.length() - 1), set);
		}
	}

}