PROGRAMMING:Surface area of cube
Enter the edge length of a cube. Please calculate and output the surface area of the cube.
###Input format:
Enter a positive integer to represent the edge length of the cube, and the value of the number should not exceed 1000.
###Output format:
Output the value of cube surface area. After outputting the book value, you need to output carriage return and line feed.
###Input example:
Here is a set of inputs. For example:
```in
three
```
###Output example:
The corresponding output is given here. For example:
```out
fifty-four
```
answer：If there is no answer, please comment
###Input format:
Enter a positive integer to represent the edge length of the cube, and the value of the number should not exceed 1000.
###Output format:
Output the value of cube surface area. After outputting the book value, you need to output carriage return and line feed.
###Input example:
Here is a set of inputs. For example:
```in
three
```
###Output example:
The corresponding output is given here. For example:
```out
fifty-four
```
answer：If there is no answer, please comment