Problems from Southwestern Europe Regional Contest (SWERC) 2011

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Distributing Ballot Boxes 6656 1720 26% 0.04 1246 1031 83% 5.1
Guess the Numbers 541 114 21% 0.01 155 74 48% 8.5
Non-negative Partial Sums 307 102 33% 0.04 103 80 78% 4.5
Remoteland 101 38 38% 0.18 34 26 76% 6.9