Add a New Benchmark

**These directions are a little stale. Email a.guha@northeastern.edu if you need some help. :) **

This is the really easy part. All you need to do is write a Python program that looks like the following:

def my_function(a: int, b: int, c: int, k: int) -> int:
    """
    Given positive integers a, b, and c, return an integer n > k such that
    (a ** n) + (b ** n) = (c ** n).
    """
    pass
    

### Unit tests below ###
def check(candidate):
    assert candidate(1, 1, 2, 0) == 1
    assert candidate(3, 4, 5, 0) == 2

def test_check():
    check(my_function)

You can then put your benchmark in a directory and run through the steps in the tutorial.

Some things to note:

The unit tests below line is important, because we look for that in our scripts.
We also rely on the name candidate. This is not fundamental, and we may get around to removing it.
You can use from typing import ... and import typing, but you cannot have any other code above the function signature.
The type annotations are not required, but are necessary to evaluate some languages.
The assertions must be equalities with simple input and output values, as shown above.
Finally, note that you do implement the function yourself. You can leave the body as pass.