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

public class Main
{
	public static void main (String[] args) 
	{
	    Scanner in = new Scanner(System.in);
	    Vector <String> c = new Vector <String>();
	    String a = in.nextLine();
	    for(int i=0;i<a.length();i++)
	    {
	        for(int j=i+1;j<=a.length();j++)
	        {
	            c.add(a.substring(i,j));
	        }
	    }
	    HashSet<String> unique = new HashSet<String>(c);
	    Vector<String> d = new Vector<String>(unique);
	    System.out.print(d.size());
	}
}