Problems from North American Invitational Programming Contest (NAIPC) 2019

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Busy Board0.019234817415%8.0Harden
Cost of Living0.0119074586013%8.9Harden
Cutting Strings0.0920373336820%8.6Harden
Heaps of Fun0.0014941415438%5.5Harden
Intersecting Rectangles0.05639120437531%5.4Mediumen
It's a Mod, Mod, Mod, Mod World0.05251102517817%7.1Harden
Knight of the Tarot Cards2.5513053779124%8.1Harden
Monotony0.61111229711338%7.8Harden
Piece of Cake0.0141199521021%8.3Harden
Planes, Trains, but not Automobiles0.0418712867326%8.1Harden
Rocket Powered Hovercraft0.008573677922%5.1Mediumen
Subsequences in Substrings0.0112682536344%4.9Mediumen
XOR Sequences0.0162936512434%5.9Harden