Problems from North American Invitational Programming Contest (NAIPC) 2017

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Apple Market 474 99 21% 0.07 121 62 51% 8.2
Blazing New Trails 824 101 12% 0.18 154 71 46% 8.2
Heaps from Trees 381 123 32% 0.15 166 108 65% 6.5
Incremental Double Free Strings 48 20 42% 0.01 21 15 71% 6.2
Maximum Color Clique 109 34 31% 0.04 39 29 74% 5.8
Pieces of Parentheses 1389 282 20% 0.01 330 224 68% 7.0
Ski Resort 115 10 9% 0.25 12 8 67% 6.1
Stars in a Can 301 101 34% 0.09 80 55 69% 5.8
Stretching Streamers 366 158 43% 0.03 169 131 78% 5.0
Unbalanced Parentheses 38 19 50% 0.02 14 10 71% 7.5
Yin and Yang Stones 2635 1662 63% 0.00 1497 1395 93% 1.7