# Roman Numerals

Simple
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Roman numerals come from the ancient Roman numbering system. They are based on specific letters of the alphabet which are combined to signify the sum (or, in some cases, the difference) of their values. The first ten Roman numerals are:

I, II, III, IV, V, VI, VII, VIII, IX, and X. ...

More additional information about Roman numerals can be found on the Wikipedia article.

For this task, you should return a Roman numeral using the specified integer value ranging from 1 to 3999.

Input: A number as an integer.

Output: The Roman numeral as a string.

Example:

```checkio(6) == 'VI'
checkio(76) == 'LXXVI'
checkio(13) == 'XIII'
checkio(44) == 'XLIV'
checkio(3999) == 'MMMCMXCIX'```

How it is used: This is an educational task that allows you to explore different numbering systems. Since Roman numerals are often used in the typography, it can alternatively be used for text generation. The year of construction on building faces and cornerstones is most often written in Roman numerals. These numerals have many other uses in the modern world and you can read about it here... Or maybe you will have a customer from Ancient Rome ;-)

Precondition: 0 < number < 4000

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