var numstrs = [];

var nstr = {
  0: '',
  1: 'one',
  2: 'two',
  3: 'three',
  4: 'four',
  5: 'five',
  6: 'six',
  7: 'seven',
  8: 'eight',
  9: 'nine',
  10: 'ten',
  11: 'eleven',
  12: 'twelve',
  13: 'thirteen',
  14: 'fourteen',
  15: 'fifteen',
  16: 'sixteen',
  17: 'seventeen',
  18: 'eighteen',
  19: 'nineteen',
  20: 'twenty',
  30: 'thirty',
  40: 'forty',
  50: 'fifty',
  60: 'sixty',
  70: 'seventy',
  80: 'eighty',
  90: 'ninety',
  100: 'hundred',
  1000: 'thousand'
  1000000: 'million',
  100000000: 'billion',
  100000000000: 'trillion',
};

var tens2str = function(n) {
  if (n > 99) return "";

  if (n <= 20) return nstr[n];
  var s = String(n).split('');
  return nstr[Number(s[0])*10] + '-' + nstr[s[1]];
}

var num2str = function(n)
{
  if (n === 0) return 'zero';
    
  var s = String(n).split('');
  var tens = s.slice(s.length-2, s.length);
  var rest = s.slice(0, s.length-2).reverse();

  rest = rest.map(function(v,i) {
    if (v === '0') return "";
    return nstr[v] + " " + nstr[Math.pow(10,i+2)] + " and ";
  });
    
  rest = rest.reverse().filter(x=>x).join('');
  rest += tens2str(Number(tens.join('')));
  rest = rest.replace(/ and $/, '');
  rest = rest.replace(/-$/,'');
  return rest;
}

var lettersinnum = function(n)
{
  var str = num2str(n).replaceAll(/[- ]/g,'');
  return str.length;
}

var sum = 0;
for (var i = 1; i <= 1000; i++) {
  console.log(num2str(i));
  sum += lettersinnum(i);
}

console.log(sum);