using System.Text.RegularExpressions;
        int ow = 0;
        int ace = 0;
        int ore = 0;
        string bunch = Console.ReadLine();
        foreach (Match a in Regex.Matches(bunch, "ow"))
        {
            ow++;
        }

        foreach (Match b in Regex.Matches(bunch, "ace"))
        {
            ace++;
        }

        foreach (Match c in Regex.Matches(bunch, "ore"))
        {
            ore++;
        }