using System;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using static System.Math;

namespace SortItems
{
    class Program
    {
        static void Main(string[] args)
        {
            var n = Console.ReadLine();
            var count1 = 0;
            var count2 = 0;

            for (var i = 0; i < n.Length; i++)
            {
                if (n[i] == '…')
                {
                    count1++;

                }
                else
                {
                    if (count1 > count2)
                    {
                        count2 = count1;
                        count1 = 0;
                    }
                    count1 = 0;
                }
            }

            Console.WriteLine(count1 > count2 ? count1 : count2);
        }
    }
}