For those not in the know, Twila is one of the many #doggosofamplitude that you might see in a Dr. Pepper costume.

Jessica is taking Twila out for an afternoon walk! For today's walk, Jessica has planned a walk that is $x$ miles long.

Twila prefers longer walks to shorter walks - when her walk is $y$ miles long, she gains $y^2$ units of happiness.

How many units of happiness will Twila gain on today's walk?

Constraints

$1\le x\le 10$

Input Specification

The first and only line of input contains a positive integer $x$.

Output Specification

Output the number of units of happiness Twila gains on the walk.

Sample Input 1

1

Sample Output 1

1

Sample Explanation 1

If Twila walks for $1$ mile, she gains $1^2=1$ unit of happiness.

Sample Input 2

10

Sample Output 2

100

Sample Explanation 2

If Twila walks for $10$ miles, she gains ${10}^2=100$ units of happiness.