# https://www.codewars.com/kata/51b66044bce5799a7f000003/train/python

def to_roman(number: int) -> str:
    roman_number = {'M': 1000, 'CM': 900, 'D': 500, 'CD': 400, 'C': 100, 'XC': 90, 'L': 50, 'XL': 40, 'X': 10, 'IX': 9, 'V': 5, 'IV': 4, 'I': 1}
    roman = ''
    for k,v in roman_number.items():
        if (number // v) > 0:
            roman += (number // v) * k
            number = number % v
        else:
            continue
    return roman

def from_roman(string: str) -> int:
    roman_number = {'M': 1000, 'CM': 900, 'D': 500, 'CD': 400, 'C': 100, 'XC': 90, 'L': 50, 'XL': 40, 'X': 10, 'IX': 9, 'V': 5, 'IV': 4, 'I': 1}
    list_char = list(string)
    number = 0
    while list_char != []:
        if len(list_char) == 1:
            number += roman_number.get(list_char[0])
            list_char.remove(list_char[0])
        elif roman_number.get(list_char[0]) > roman_number.get(list_char[1]):
            number += roman_number.get(list_char[0])
            list_char.remove(list_char[0])
        elif roman_number.get(list_char[0]) < roman_number.get(list_char[1]):
            number += roman_number.get(list_char[0]+list_char[1])
            del list_char[0:2]
        elif roman_number.get(list_char[0]) == roman_number.get(list_char[1]):
            number += string.count(list_char[0]) * roman_number.get(list_char[0])
            del list_char[0:string.count(list_char[0])]
    return number