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 175 29 17% 0.00 64 26 41% 7.9
Coverage 125 25 20% 0.04 32 21 66% 7.2
Gears 221 106 48% 0.00 114 100 88% 3.6
Grid 4409 1698 39% 0.01 1212 1054 87% 2.8
Hilbert Sort 260 68 26% 0.04 74 57 77% 7.3
Racing Gems 119 48 40% 0.03 53 39 74% 6.3
Simplicity 2056 837 41% 0.00 803 705 88% 2.5
Weightlifting 152 62 41% 0.00 44 39 89% 5.1