Problems from 2013 ACM-ICPC North American Qualifier

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
4 thought 11722 4023 34% 0.00 3862 3264 85% 2.6
Biggest Slice 936 227 24% 0.00 268 170 63% 6.4
Erratic Ants 1491 458 31% 0.00 527 388 74% 4.9
Even Up Solitaire 6014 2391 40% 0.00 2122 1779 84% 2.6
Goldbach's Conjecture 4653 1833 39% 0.00 1721 1418 82% 2.6
Island Buses 582 167 29% 0.00 190 130 68% 7.1
Oddities 30017 16481 55% 0.00 14635 14122 96% 1.3
Plotting Polynomials 357 283 79% 0.00 269 250 93% 2.4
Shotcube 343 50 15% 0.17 75 33 44% 8.7
Ternarian Weights 830 340 41% 0.00 357 296 83% 3.8
Trapezoid Walkway 521 250 48% 0.00 251 217 86% 3.5