Problems from Google Code Jam Practice Problems

	Add	Remove

Name	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Alien Numbers	125	3221	2793	87%	1.9Easy	en
Shopping Plan	1120	48	27	56%	7.9Hard	en
Square Fields (Easy)	772	134	108	81%	5.3Medium	en
Square Fields (Hard)	824	188	140	74%	6.3Hard	en