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PROGRAMMING:1!+ 2!+...+ n!

Luz5年前 (2021-05-10)题库381
Caculate 1!+ 2!+...+ n!
### Input:
An integer for n.
### Output:
An interger for the result.
### Input sample:
```
five
```
### Output sample:
```
one hundred and fifty-three
```






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