Problems from 2020 ICPC North America Regionals (March 6 2021)

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Ant Typing0.0127045426959%5.8Harden
Bad Packing0.0028735517148%7.3Harden
Basic Basis0.00760714868%7.3Harden
Bitonic Ordering0.0440721213162%6.7Harden
Condorcet0.00708582848%8.1Harden
Derangement Rotations0.00102624979%6.5Harden
Dominating Duos0.037635621962%5.8Harden
Exam Manipulation0.0011972453974%3.6Mediumen
Exciting Tournament0.002153594475%6.9Harden
Kth Subtree0.0667016211873%5.7Harden
Longest Common Subsequence0.0029349038178%4.1Mediumen
Magic Trick0.00145276503595%1.4Easyen
Missing Number0.0058105280777%3.5Mediumen
No Thanks!0.00662029187492%1.7Easyen
Painted Corridors0.011330744561%8.3Harden
Rainbow Numbers0.0026120313366%6.3Harden
Rating Problems0.00516863661096%1.3Easyen
Smoothie Stand0.008963156389%2.3Easyen
Triangular Collection0.008728621977%5.2Mediumen
TripTik0.441738916470%7.6Harden
Unread Messages0.005870550471%4.3Mediumen