PROGRAMMING:[input / output] [calculation multiple a --]
Input a positive integer n, please output 2 times of this positive integer n.
###Input format:
Enter a positive integer n, test data to ensure 1 < = n < = 1000.
###Output format:
Output 2 times of N. after output, you need to output carriage return and line feed.
###Input example:
Here is a set of inputs. For example:
```in
one hundred and twenty-three
```
###Output example:
The corresponding output is given here. For example:
```out
two hundred and forty-six
```
answer：If there is no answer, please comment
###Input format:
Enter a positive integer n, test data to ensure 1 < = n < = 1000.
###Output format:
Output 2 times of N. after output, you need to output carriage return and line feed.
###Input example:
Here is a set of inputs. For example:
```in
one hundred and twenty-three
```
###Output example:
The corresponding output is given here. For example:
```out
two hundred and forty-six
```
answer：If there is no answer, please comment