PROGRAMMING:5-2 calculate 1+ 2!+ 3!+...+ n! The sum of

5-2, sum = 1+ 2!+ 3!+...+ n! Where n is entered from the keyboard.
###Input format:
For example, enter a positive integer.
###Output format:
For example: output factorial sum.
###Input example:
Here is a set of inputs. For example:
```in
five
```
###Output example:
The corresponding output is given here. For example:
```out
one hundred and fifty-three
```







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