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

namespace YukiCoder
{
    class Program
    {
        static void Main(string[] args)
        {
            var va = Console.ReadLine().ToList();
            int nT = va.Count();
            for (int i = 0; i < nT; i++)
            {
                int nO = va.Skip(i).Count(c => c == 'o');
                int nX = va.Skip(i).Count(c => c == 'x');
                double dn = (double)(nO*100) / (double)(nO + nX);
                Console.WriteLine(dn.ToString("F13"));
            }
            Console.ReadLine();
        }
    }
}