PROGRAMMING:Calculate the perimeter of a rectangle
Input the length and width of the rectangle, program its perimeter and output.
###Input format:
Enter two integers separated by a space.
###Output format:
Output perimeter value.
###Input example:
```in
3000 2000
```
###Output example:
```out
ten thousand
```
answer：If there is no answer, please comment
###Input format:
Enter two integers separated by a space.
###Output format:
Output perimeter value.
###Input example:
```in
3000 2000
```
###Output example:
```out
ten thousand
```
answer：If there is no answer, please comment