Problems from Northwestern Europe Regional Contest (NWERC) 2011

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Movie Collection 2457 884 36% 0.02 771 562 73% 5.3
Piece It Together 287 74 26% 0.00 71 43 61% 6.0
Please, Go First 138 88 64% 0.00 81 70 86% 3.9
Train Delays 22 9 41% 0.01 9 8 89% 5.6