Problems from Google Code Jam Practice Problems

	Add	Remove

Name	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Alien Numbers	125	3209	2783	87%	1.9Easy	en
Shopping Plan	1120	47	27	57%	7.8Hard	en
Square Fields (Easy)	772	134	108	81%	5.3Medium	en
Square Fields (Hard)	824	177	130	73%	6.5Hard	en