Number letter counts №17

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
//If the numbers 1 to 5 are written out in words: one, two, three, four, five, then there are 3 + 3 + 5 + 4 + 4 = 19 letters used in total.

//If all the numbers from 1 to 1000 (one thousand) inclusive were written out in words, how many letters would be used?


//NOTE: Do not count spaces or hyphens.For example, 342 (three hundred and forty-two) contains 23 letters and 115 (one hundred and fifteen) contains 20 letters.The use of "and" when writing out numbers is in compliance with British usage.

namespace _17
{
    class Program
    {
        static void Main(string[] args)
        {
            string content = System.IO.File.ReadAllText(@"C:\Users\Максим\Documents\data.txt", Encoding.Default);
            var a = content.Split(' ', '-');
            var sum = 0;
            foreach(var e in a) sum += e.Length;
            Console.WriteLine(sum);
        }
    }
}