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regex_pattern = r"^M{0,3} (CM|CD|D?C{0,3})?(XC|XL|L?X{0,3})?(IX|IV|V?I{0,3})?$" import re print(str(bool(re.match(regex_pattern, input()))))
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Validating Roman Numerals
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regex_pattern = r"^M{0,3} (CM|CD|D?C{0,3})?(XC|XL|L?X{0,3})?(IX|IV|V?I{0,3})?$" import re print(str(bool(re.match(regex_pattern, input()))))