Solve problem "Adding factorials" online - Learn Python 3 - Snakify

## Statement

Given an integer $$n$$, print the sum $$1!+2!+3!+...+n!$$.

This problem has a solution with only one loop, so try to discover it. And don't use the math library :)

In all the problems input the data using input() and print the result using print().

## Tests

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9
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153
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873
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5913
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46233
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409113
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4037913