Problems from Programming Battle, contest Beta

	Add	Remove

Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Coupons	0.04	841	41	16	39%	9.1Hard	en
Forest Construction	0.00	641	67	49	73%	7.5Hard	en
Horse in Ambush	0.00	411	53	19	36%	9.0Hard	en