using System;

namespace No346
{
    class Program
    {
        static void Main(string[] args)
        {
            int num = 0;
            string word = "cww";
            string text = Console.ReadLine();

            for (int i = 0; i < text.Length; i++)
            {
                if (text[i] == word[0])
                {
                    int count = 0;
                    for (int j = i + 1; j < text.Length; j++)
                    {
                        if (text[j] == word[1])
                            count++;
                    }

                    if (count > 1)
                        num += Factorial(count) / (2 * Factorial(count - 2));
                }
            }

            Console.WriteLine(num);
        }

        static int Factorial(int num)
        {
            int result = 1;

            for (int i = 1; i <= num; i++)
                result *= i;

            return result;
        }
    }
}