Added solution to Project Euler problem 301 (#3343)

* Added solution to Project Euler problem 301

* Added newline to end of file

* Fixed formatting and tests

* Changed lossCount to loss_count

* Fixed default parameter value for solution

* Removed helper function and modified print stmt

* Fixed code formatting

* Optimized solution from O(n^2) to O(1) constant time

* Update sol1.py