Problems from Northwestern Europe Regional Contest (NWERC) 2011

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Movie collection 874 305 35% 0.02 291 199 68% 5.7
Piece It Together 108 29 27% 0.00 30 17 57% 8.2
Please, Go First 66 36 55% 0.00 32 27 84% 4.7
Train Delays 13 6 46% 0.02 6 5 83% 5.9