using System;
using System.Text;

class Program
{
    static void Main()
    {
        string s = Console.ReadLine();
        var dots = new StringBuilder("…");
        int cnt;

        for (cnt = 0; cnt < 100; cnt++)
        {
            if (s.IndexOf(dots.ToString()) < 0) break;
            dots.Append("…");
        }

        Console.WriteLine(cnt);
    }
}