@staticmethod
    def romanchartoint(char):
        return {
            'I': 1,
            'V': 5,
            'X': 10,
            'L': 50,
            'C': 100,
            'D': 500,
            'M': 1000
        }[char]

    @staticmethod
    def romantoint(string):
        string = string.trim()
        accum = 0
        i = 0
        while i < len(string) - 1:
            c = QuerySolver.romanchartoint(string[i])
            if QuerySolver.romanchartoint(string[i+1]) > c:
                accum -= c
        accum += QuerySolver.romanchartoint(accum[-1])
        return accum