Problems from North American Invitational Programming Contest 2018

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Cut It Out! 90 48 53% 0.07 35 29 83% 3.7
Double Clique 199 52 26% 0.02 58 44 76% 4.0
Flashing Fluorescents 298 93 31% 0.00 93 64 69% 6.4
Missing Gnomes 951 383 40% 0.01 347 304 88% 2.2
Prefix Free Code 1259 248 20% 0.04 238 144 61% 7.1
Probe Droids 206 32 16% 0.00 54 22 41% 8.0
Rainbow Graph 37 12 32% 0.01 15 8 53% 6.8
Recovery 497 148 30% 0.00 159 125 79% 4.9
Red Black Tree 421 143 34% 0.09 108 88 81% 5.1
Winter Festival 30 11 37% 0.07 15 10 67% 5.7
Zoning Houses 554 161 29% 0.09 179 117 65% 6.4