PROGRAMMING:Approximate value of SiNx by Taylor expansion

The polynomial of SiNx approximation by Taylor expansion is as follows:
。
Input x to get the approximate value of SiNx, the error is not more than 0.00001.
###Input format:
Enter a real data directly. There are no additional characters.
###Output format:
Directly output the real result with 3 decimal places.
###Input example:
```in
two point five
```
###Output example:
```out
zero point five nine eight
```






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