using System;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string razd=":;, -";
            string kp=".!?";
            string dig = "0123456789";
            string[] input = Console.In.ReadLine().Split(
            new char[] {  '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
            int cnt = 0;
            int ns = 0;
            int nb = 0;
            for (int i = 0; i < input.Length; i++)
            {
                string s = input[i];
                for (int j = 0; j < s.Length; j++)
                {
                    if ((s[j] >= 'A' && s[j] <= 'Z') || (s[j]>='a' && s[j]<='z') || dig.IndexOf(s[j])>=0)
                    {
                        nb++;
                        if (ns == 0) ns++;
                        if (nb == 1 && ns == 1 && (s[j] >= 'a' && s[j] <= 'z')) cnt++;
                        if ((s[j] >= 'A' && s[j] <= 'Z') && nb > 1) cnt++;
                    }
                    if (razd.IndexOf(s[j]) >= 0)
                    {
                        nb=0;
                        if (ns > 0) ns++;
                    }
                    if (kp.IndexOf(s[j])>=0)
                    {
                        ns = 0;
                        nb = 0;
                    }
                }
                nb = 0;
            }
            Console.WriteLine(cnt.ToString());
            Console.ReadKey();
        }
    }
}