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+# Dictionaries that map from number to number of letters
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+ones = {
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+ 0: 0, # 'one'
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+ 1: 3, # 'two'
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+ 2: 3,
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+ 3: 5,
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+ 4: 4,
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+ 5: 4,
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+ 6: 3,
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+ 7: 5,
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+ 8: 5,
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+ 9: 4,
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+ }
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+teens = {
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+ 10: 3, # 'ten'
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+ 11: 6, # 'eleven'
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+ 12: 6,
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+ 13: 8,
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+ 14: 8,
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+ 15: 7,
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+ 16: 7,
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+ 17: 9,
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+ 18: 8,
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+ 19: 8,
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+ }
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+tens = {
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+ 2: 6, # 'twenty'
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+ 3: 6, # 'thirty'
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+ 4: 5,
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+ 5: 5,
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+ 6: 5,
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+ 7: 7,
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+ 8: 6,
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+ 9: 6,
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+ }
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+hundred = {
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+ 0: 10,
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+ 1: 13, # 'one hundred and '
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+ 2: 13, # 'two hundred and '
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+ 3: 15,
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+ 4: 14,
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+ 5: 14,
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+ 6: 13,
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+ 7: 15,
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+ 8: 15,
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+ 9: 14,
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+ }
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+
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+def number_length(n):
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+ if n < 10:
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+ return ones[n]
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+ elif n < 100:
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+ if n < 20:
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+ return teens[n]
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+ else:
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+ return tens[n/10] + ones[n % 10]
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+ elif n < 1000:
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+ if n % 100 == 0:
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+ return ones[n/100] + 7 # Add 7 for length of 'hundred'
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+ else:
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+ return hundred[n/100] + number_length(n % 100)
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+
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+def main(n):
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+ total = 0
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+ for i in xrange(1, n):
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+ total += number_length(i)
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+ return total + 11 # Add 11 for length of 'one thousand'
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+
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+if __name__ == "__main__":
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+ print main(1000)
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