Problems from 2015 Southeast USA Regionals Division 1

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Airports 385 109 28% 0.11 114 81 71% 6.8
Checkers 130 26 20% 0.00 59 23 39% 8.4
Coverage 120 24 20% 0.04 31 20 65% 7.1
Gears 204 98 48% 0.00 105 92 88% 3.6
Grid 3387 1293 38% 0.01 983 853 87% 3.0
Hilbert Sort 257 67 26% 0.04 72 56 78% 7.0
Racing Gems 115 45 39% 0.03 49 36 73% 6.5
Simplicity 1838 734 40% 0.00 725 630 87% 2.6
Weightlifting 149 59 40% 0.00 42 37 88% 5.0