using System;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static void Main(string[] args)
    {
        string s = Console.ReadLine();
        int count = 0;
        int a = 0;

        for (int i = 0; i < s.Length; i++)
        {
            if (a == 0)
            {
                if (s[i] == 'c')
                {
                    a++;
                }
                else
                {
                    a = 0;
                }

                continue;
            }

            if (a == 1)
            {
                if (s[i] == 'c')
                {
                    a++;
                }
                else
                {
                    a = 0;
                    i--;
                }

                continue;
            }

            if (a == 2)
            {
                if (s[i] == 'w')
                {
                    count = i - 1;
                    break;
                }
                else
                {
                    a = 0;
                    i -= 2;
                }

                continue; ;
            }
        }

        if (count > 0)
        {
            int l = s.Length / 2;

            if (l <= count)
            {
                count = s.Length - (count + 1);
            }
        }

        Console.WriteLine(count);
        Console.Read();
    }
}