extract code from ISOGRAD contest

[joand]

ISOGRAD is another code contest platform (a bit like CodinGame)

And I did some push in this repo I would like to extract and put in https://github.com/joand/ISOGRAD

Your mission will be to :

1. identify the corresponding code
2. remove it from https://github.com/joand/codingame/
3. push it into https://github.com/joand/ISOGRAD