using System;

namespace No341
{
    class Program
    {
        static void Main(string[] args)
        {
            bool check = false;
            int n = 0, max = 0;
            string data = Console.ReadLine() + " ";

            foreach(char s in data)
            {
                if (check)
                {
                    n++;
                    if (s != '…')
                    {
                        if (max < n)
                        {
                            max = n;
                        }

                        n = 0;
                        check = false;
                    }
                }
                else
                {
                    if (s == '…')
                        check = true;
                }
            }

            Console.WriteLine(max);
        }
    }
}