Problems from 2015 Southeast USA Regionals Division 1

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Airports 486 150 31% 0.11 130 94 72% 6.4
Checkers 203 30 15% 0.00 65 27 42% 7.8
Coverage 125 25 20% 0.04 32 21 66% 7.2
Gears 224 108 48% 0.00 116 102 88% 3.5
Grid 4536 1770 39% 0.01 1249 1086 87% 2.9
Hilbert Sort 265 69 26% 0.04 76 58 76% 7.2
Racing Gems 123 49 40% 0.03 54 40 74% 6.2
Simplicity 2201 882 40% 0.00 845 741 88% 2.5
Weightlifting 152 62 41% 0.00 44 39 89% 5.1