import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.TreeSet;

public class Main {
	
	static TreeSet<String> mList = new TreeSet<String>();
	
	public static void main(String[] args) throws IOException {
		BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
		String s = r.readLine();
		String v = "";
		solve(s, v);
		System.out.println(mList.size());
	}
	
	static void solve(String s, String v) {
		if(s.length() == 0) {
			mList.add(v);
			return;
		}
		String l,r;
		int len = s.length();
		//前の文字をとる
		l = s.substring(0, 1);
		r = s.substring(1);
		solve(r, v+l);
		
		//後ろの文字を取る
		l = s.substring(0, len-1);
		r = s.substring(len-1);
		solve(l, v+r);
	}
}