using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace yukicoderTest
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            int len = 0;
            int minlen = -1;
            bool fw = true;
            bool cww = false;
            for (int i=0;i<input.Length-1;i++)
            {
                string c = input.Substring(i, 1);
                if(c=="c")
                {
                    len++;
                }
                else
                {
                    continue;
                }
                for(int j=i+1;j<input.Length;j++)
                {
                    string w = input.Substring(j, 1);
                    if(w=="w"&&fw==true)
                    {
                        fw = false;

                    }
                    else if(w=="w"&&fw==false)
                    {
                        cww = true;
                        fw = false;
                        len++;
                        if (minlen < len)
                        {
                            minlen = len;
                        }
                        len = 0;
                        break;
                    }
                    len++;
                }
                
                
            }
            Console.WriteLine(minlen);
        }

    }
}