numerals = {"I": 1, "V": 5, "X": 10, "L": 50, "C": 100, "D": 500, "M": 1000}



def convert(roman):
  amount = 0
  if roman in numerals:
    for roman in numerals:
      if numerals[roman] > numerals["V"]:
        amount += numerals[roman]
        print(amount)
  else:
    print(0)


convert("I")