integer_values = {1: 'I', 5: 'V', 10: 'X', 50: 'L', 100: 'C', 500: 'D', 1000: 'M'}
buffer = input("int: ")
buffer = int(buffer)
output = ""
dict_length = len(sorted(integer_values))
for i in range(1, dict_length + 1):
    letters = buffer / sorted(integer_values)[dict_length - i]
    if letters >= 1:
        for x in range(0, round(letters)):
            output += integer_values[sorted(integer_values)[dict_length - i]]
            buffer -= sorted(integer_values)[dict_length - i]
print("roman: " + output)