Square of a quantity

Problem

A warehouse tool needs the square of a number. Write a function square(n) that returns n * n, read n, and print the result.

Example

Input

Output

7 * 7.

Try the problem first. Open one hint at a time.

Hint 1

Write the function first with one parameter, then call it on the number you read.

Hint 2

The function should return the value; print it outside the function.

Write your Python code, run it on the examples and submit it to hidden tests.