using System;

public class Hello
{
    public static void Main()
    {
        var s = Console.ReadLine().Trim();
        var count = 0; var cmax = 0;
        if (s[0] == '…') { count++; cmax = 1; }
        for (int i = 1; i < s.Length; i++)
            if (s[i] == '…')
            {
                count++;
                cmax = Math.Max(cmax, count);
            }
            else count = 0;
        Console.WriteLine(cmax);
    }
}