Римские примеры

keys = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1]
values = ['M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I']


def to_roman(n):
    pointer = 0
    result = ''
    while n > 0:
        while n >= keys[pointer]:
            n -= keys[pointer]
            result += values[pointer]
        pointer += 1
    return result


def roman():
    global one, two, three

    three = one + two
    print(to_roman(one), "+", to_roman(two), "=", to_roman(three))

one = 5
two = 4
roman()