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

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Ant Typing0.0127045426859%5.9Harden
Bad Packing0.0028735517148%7.3Harden
Basic Basis0.00760704767%7.2Harden
Bitonic Ordering0.0440720812761%6.8Harden
Condorcet0.00708562545%8.7Harden
Derangement Rotations0.00102624979%6.3Harden
Dominating Duos0.037635621861%5.9Harden
Exam Manipulation0.0011971953574%3.6Mediumen
Exciting Tournament0.002153574274%6.9Harden
Kth Subtree0.0667015911673%5.8Harden
Longest Common Subsequence0.0029348837877%4.1Mediumen
Magic Trick0.00145262502195%1.5Easyen
Missing Number0.0058104980477%3.6Mediumen
No Thanks!0.00661986183092%1.7Easyen
Painted Corridors0.011330734460%8.3Harden
Rainbow Numbers0.0026119812865%6.4Harden
Rating Problems0.00516839658696%1.3Easyen
Smoothie Stand0.008962055289%2.3Easyen
Triangular Collection0.008728021276%5.4Mediumen
TripTik0.441738906370%7.6Harden
Unread Messages0.005870350171%4.5Mediumen