Problems from 2015 Southeast USA Regionals Division 1

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Airports 345 100 29% 0.11 100 73 73% 6.2
Checkers 113 24 21% 0.00 49 21 43% 8.1
Coverage 101 19 19% 0.04 24 17 71% 7.0
Gears 190 91 48% 0.00 100 87 87% 3.8
Grid 2673 1034 39% 0.01 784 685 87% 2.9
Hilbert Sort 226 62 27% 0.04 60 51 85% 5.1
Racing Gems 108 42 39% 0.03 46 33 72% 7.0
Simplicity 1613 643 40% 0.00 636 550 86% 2.7
Weightlifting 139 56 40% 0.00 36 34 94% 4.3