Cube

Time Limit: 1 sec

 

The Problem

A Cube is a combination of 6 Squares of same length means it is a 6-sided figure of a Square.

If Area of a Square is s² then what will be the Area of a Cube?

 

 

The Input

The input contains a series of lines. Each line contains a single integer number, the length of one side of a Square, L (L <= 1000).

 

The Output

For each line of input the output will show the Surface Area of a Cube in a separate line.

 

Sample Input

2

3

 

Sample Output

24

54

 

 

 

Problem Setter: Samia Safa Ahmed