# This is Mathness!

You are given $$10$$ digits from $$0$$ to $$9$$.A crazy set is a set whose elements are one or more numbers whose digits are taken from $$0$$ to $$9$$,each digit used once compulsorily(in the whole set).

[For example ,$$S =\{12,34,56,70,8,9\}$$ is crazy set because it consists of all digits
$$0-9$$ and in the total set each digit is used once!! Similarly $$S = \{1234567,890\}$$ is also a crazy set.]

Find the number of crazy sets whose sum of elements is 100 .

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