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

namespace ConsoleApplication42
{
    class Program
    {
        static void Main(string[] args)
        {
            string str = null;
            using (StreamReader sr = new StreamReader("D:\\New.txt"))
                str = sr.ReadToEnd();
                int result = 0;
                foreach (char ch in str)
                    if (char.IsDigit(ch))
                        result += (int)Char.GetNumericValue(ch);
                Console.WriteLine(result);
        }
    }
}