Problems from North American Invitational Programming Contest (NAIPC) 2018

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Cut It Out! 162 70 43% 0.03 59 43 73% 5.6
Double Clique 397 109 27% 0.01 107 74 69% 6.5
Flashing Fluorescents 672 225 33% 0.00 162 128 79% 5.5
Missing Gnomes 2997 1121 37% 0.01 741 667 90% 2.5
Prefix Free Code 2206 505 23% 0.04 321 223 69% 6.6
Probe Droids 372 74 20% 0.00 91 47 52% 7.3
Rainbow Graph 155 65 42% 0.01 47 32 68% 5.6
Recovery 1171 357 30% 0.00 243 198 81% 5.3
Red Black Tree 856 357 42% 0.04 166 145 87% 4.6
Winter Festival 47 18 38% 0.07 25 16 64% 6.8
Zoning Houses 1160 358 31% 0.09 248 177 71% 6.4