def checkio(data):
	roman_dict = {"I": 1, "V": 5, "X": 10, "L": 50, "C": 100, "D": 500, "M": 1000}

	def dig_to_roman(data, result):
		if data > roman_dict["M"]:
			print(data)
			dig_to_roman(data-roman_dict["M"], result + "M")
		else:
			#print("PRINT RESULT ", result)
			return result


	return dig_to_roman(data, "")
# if __name__ == '__main__':
# 	#These "asserts" using only for self-checking and not necessary for auto-testing
# 	assert checkio(6) == 'VI', '6'
# 	assert checkio(76) == 'LXXVI', '76'
# 	assert checkio(499) == 'CDXCIX', '499'
# 	assert checkio(3888) == 'MMMDCCCLXXXVIII', '3888'
print(checkio(4888))