Problems from North American Invitational Programming Contest (NAIPC) 2017

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Apple Market 470 96 20% 0.07 118 60 51% 8.3
Blazing New Trails 788 96 12% 0.18 151 68 45% 8.3
Heaps from Trees 370 119 32% 0.15 160 104 65% 6.1
Incremental Double Free Strings 48 20 42% 0.01 21 15 71% 6.1
Maximum Color Clique 107 32 30% 0.04 37 27 73% 6.9
Pieces of Parentheses 1364 274 20% 0.01 323 217 67% 7.0
Ski Resort 115 10 9% 0.25 12 8 67% 5.9
Stars in a Can 276 89 32% 0.09 71 48 68% 5.4
Stretching Streamers 365 158 43% 0.03 168 131 78% 4.6
Unbalanced Parentheses 38 19 50% 0.02 14 10 71% 7.4
Yin and Yang Stones 2512 1583 63% 0.00 1429 1331 93% 1.7