4 lines
252 B
Python
4 lines
252 B
Python
from functools import reduce
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numerals = { 'M' : 1000, 'D' : 500, 'C' : 100, 'L' : 50, 'X' : 10, 'V' : 5, 'I' : 1 }
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def romannumeral2number(s):
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return reduce(lambda x, y: -x + y if x < y else x + y, map(lambda x: numerals.get(x, 0), s.upper()))
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