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 s = Console.ReadLine();

            string w = s;

            int i = 0;
            while (w.Contains("ccw"))
            {
                w = w.Substring(1);
                i++;
            }

            int j = 0;
            w = s;
            while (w.Contains("ccw"))
            {
                w = w.Substring(0, w.Length -1);
                    j++;
            }

            if (i > j)
            {
                Console.WriteLine(j);
            }else
            {
                Console.WriteLine(i);
            }
        }
    }
}