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

namespace yukikoda
{
    class Program
    {
        static void Main(string[] args)
        {
            string a = Console.ReadLine();


            int cnt = 0;
            int max = 0;
            foreach (var item in a)
            {
                if (item == '…')
                {
                    cnt++;
                    max = Math.Max(max, cnt);
                }else
                {
                    cnt = 0;
                }
            }
            Console.WriteLine(max);
            Console.Read();
        }
    }
}