using System;
using System.Collections.Generic;
using System.Text;
using System.Linq;

class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        string inpt = Reader.ReadLine();
        int count = 0;
        int ans = 0;
        bool isStart = false;
        for(int i=0; i<inpt.Length; i++) {
            if(inpt[i] == '…') {
                if(isStart) {
                    count++;
                } else
                {
                    isStart = true;
                    count = 1;
                }
            } else
            {
                if(isStart) {
                    ans = Math.Max(ans, count);
                    isStart = false;
                }
            }
        }
        ans = Math.Max(count, ans);
        Console.WriteLine(ans);
    }
    

    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"



……………




";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}