Create CHEFGP.py

[avsingh999]

Fixes #{273}

• [X] Pull Request Title is of form Problem Code (Contest Code) [Language].
• [ ] This problem already had an entry in this repository.
  • [ ] This solution is better than the one already in this repository.
• [X] This solution is prepared by me and not copied from anywhere else on the web.
• [X] I have added a copyright comment in my solution.
• [X] I have updated README.md file (in appropriate order).
• [X] I have read and followed Code Samples.
• [X] I understand that pull request will be closed if I failed to update it even once in a week.

[aashutoshrathi]

Hi! Thanks for contributing to this repository. Make sure you have checked points in PR correctly.

This message was posted by GitMate.io with timestamp signature Hi! Thanks for contributing to this repository. Make sure you have checked points in PR correctly.:1eKRMR:WvlDpF1mKYgWOlcnm2KZS46mBSI