339 - Cube

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 **s ^{2}** 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