Problems from Programming Battle, contest Beta

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Coupons 40 5 12% 0.14 10 5 50% 8.1
Forest Construction 128 26 20% 0.00 29 23 79% 6.1
Horse in Ambush 141 16 11% 0.00 28 14 50% 8.6