using System;
class Program {
    static void Main() {
        int ans=0,tmp = 0;
        char[] cs = Console.ReadLine().ToCharArray();
        int len=cs.Length;
        for (int i=0; i< len; i++) {
            if (cs[i] == '…') {
                tmp++;
                if (ans < tmp) ans = tmp;
            } else tmp= 0;
        }
        Console.WriteLine(ans);
    }
}