Problems from North American Invitational Programming Contest (NAIPC) 2019

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Busy Board 589 97 16% 0.01 138 75 54% 8.4
Cost of Living 413 51 12% 0.01 115 37 32% 9.0
Cutting Strings 341 70 21% 0.09 75 41 55% 8.5
Heaps of Fun 143 75 52% 0.00 65 55 85% 6.5
Intersecting Rectangles 1575 450 29% 0.03 324 245 76% 6.4
It's a Mod, Mod, Mod, Mod World 1243 248 20% 0.05 248 127 51% 7.5
Knight of the Tarot Cards 290 62 21% 4.33 51 29 57% 7.7
Monotony 319 149 47% 0.61 101 78 77% 8.2
Piece of Cake 1157 297 26% 0.01 369 171 46% 8.5
Planes, Trains, but not Automobiles 321 87 27% 0.04 78 56 72% 8.6
Rocket Powered Hovercraft 322 79 25% 0.00 50 42 84% 4.6
Subsequences in Substrings 1205 503 42% 0.01 327 275 84% 5.1
XOR Sequences 373 148 40% 0.00 125 104 83% 5.6