using System;

namespace No346
{
    class Program
    {
        static void Main(string[] args)
        {
            string word = "cww";
            string text = Console.ReadLine();

            int total = Search(text, word);

            Console.WriteLine(total);
        }

        static int Search(string text, string word)
        {
            if (word.Length == 0)
                return 1;

            int num = 0;

            for (int i = 0; i < text.Length; i++)
            {
                if (text[i] == word[0])
                    num += Search(text.Substring(i + 1), word.Substring(1));
            }

            return num;
        }
    }
}