using System;

public class Program

{

    public static void Main(String[] args)

    {

        int index, length;

        index = 1;

        length = 0;

        String TheString = Console.ReadLine();

        { while (Char.IsLetter(TheString[index]) == true);

            index ++;

        }

        length = index - 1;

        Console.WriteLine("The length of the string is ", length);

    }

}