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s = s.split('.')
digits = {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}
n = reduce(lambda x, y: x*10+y, map(lambda x: digits[x], s[0]))+reduce(lambda x, y:x/10+y, map(lambda x: digits[x], s[1][::-1]))/10
return n

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