using System;

namespace _341
{
    class Program
    {
        static void Main(string[] args)
        {
            string s = Console.ReadLine();
            int max = 0; int now = 0;
            for (int i = 0; i < s.Length; i++)
            {
                if (s[i] == '…') now++;
                else now = 0;
                max = Math.Max(max,now);
            }
            Console.WriteLine(max);
        }
    }
}