Problems from Google Code Jam Practice Problems

	Add	Remove

Name	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Alien Numbers	125	3271	2842	87%	1.9Easy	en
Shopping Plan	1120	48	27	56%	8.0Hard	en
Square Fields (Easy)	772	134	109	81%	5.0Medium	en
Square Fields (Hard)	824	192	142	74%	6.3Hard	en