Problems from Waterloo Programming Contest 2009-06-13

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Convex Hull 811 187 23% 0.03 148 110 74% 7.1
Fire! 2171 502 23% 0.01 379 291 77% 5.4
Nice Prefixes 55 13 24% 0.02 17 10 59% 8.2
Slalom 2 182 64 35% 0.10 51 46 90% 5.2
Tic Tac Toe 646 44 7% 0.01 78 32 41% 8.3