Problems from 2013 ACM-ICPC North American Qualifier

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
4 thought 12712 4363 34% 0.00 4156 3502 84% 2.9
Biggest Slice 997 249 25% 0.00 282 181 64% 6.3
Erratic Ants 1560 472 30% 0.00 543 402 74% 5.0
Even Up Solitaire 6336 2525 40% 0.00 2219 1870 84% 2.6
Goldbach's Conjecture 4819 1915 40% 0.00 1802 1490 83% 2.7
Island Buses 625 177 28% 0.00 204 137 67% 7.3
Oddities 32571 17610 54% 0.00 15550 14953 96% 1.5
Plotting Polynomials 370 295 80% 0.00 280 261 93% 2.4
Shotcube 376 61 16% 0.17 81 37 46% 8.4
Ternarian Weights 839 348 41% 0.00 364 303 83% 3.8
Trapezoid Walkway 538 260 48% 0.00 260 226 87% 3.5