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.