[leetcode 10-08] 五、罗马数字转整数（为了攒积分）

		d = {
    
    'I':1, 'IV':3, 'V':5, 'IX':8, 'X':10, 'XL':30, 'L':50, 'XC':80, 'C':100, 'CD':300, 'D':500, 'CM':800, 'M':1000}
        return sum(d.get(s[max(i-1, 0):i+1], d[n]) for i, n in enumerate(s))

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