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

namespace ConsoleApplication4
{
    class Program
    {
        static void Main(string[] args)
        {
            const char ELLIPSIS = '…';

            string s = Console.ReadLine();
            int cnt = 0;
            int maxCnt = 0;
            
            for (int i = 0; i < s.Length; i++)
            {
                if (s[i] == ELLIPSIS)
                {
                    cnt++;
                    if (cnt > maxCnt)
                    {
                        maxCnt = cnt;
                    }
                }
                else
                {
                    cnt = 0;
                }
            }

            Console.WriteLine(maxCnt);
        }
    }
}