001. Square The Number

 001. Square The Number

time limit per test

1 second

memory limit per test

256 megabytes

input

standard input

output

standard output

A number squared is defined as the number multiplied by itself. In this problem, given a number n, print the number 𝑛2$n^2$.

Input

The only line of input contains a positive integer n.

Output

Print the number 𝑛2$n^2$: n multiplied by itself.

Example

input

Copy

6

output

Copy

36