from romandata import *
import roman

romanTable = {'I':1,'V':5,'X':10,'L':50,'C':100,'D':500,'M':1000,'IV':4,'IX':9,'XL':40,'XC':90,'CD':400,'CM':900}

def roman_to_int(romanStr):
    n = 0
    i = 0
    while i < len(romanStr):
        if i + 1 < len(romanStr) and romanStr[i:i + 2] in romanTable:
            n += romanTable[romanStr[i:i + 2]]
            i += 2
        else:
            n += romanTable[romanStr[i]]
            i += 1
    return n

charactersSaved = 0

for i in dataTable:
    lengthOriginal = len(i)
    lengthMinimal = len(roman.toRoman(roman_to_int(i)))
    charactersSaved += lengthOriginal - lengthMinimal

print(charactersSaved)