Problems from North American Invitational Programming Contest (NAIPC) 2015

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Area of Effect 164 12 7% 1.93 25 10 40% 8.7
Canyon Mapping 81 12 15% 0.08 12 8 67% 7.7
Extensive Or 76 39 51% 0.00 37 32 86% 5.0
Magic Checkerboard 1129 173 15% 0.07 233 148 64% 7.4
Primal Partitions 671 212 32% 0.01 180 141 78% 5.5
Rainbow Zamboni 317 73 23% 0.02 78 53 68% 6.0
Sand Art 450 75 17% 0.04 74 56 76% 6.9
String Stretching 810 126 16% 0.00 173 73 42% 8.7
Vending Machine 583 83 14% 0.02 144 73 51% 8.4
Zig Zag Nametag 908 368 41% 0.00 372 315 85% 3.7