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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.01270120929825%5.9Harden
Bad Packing0.0028791719822%7.6Harden
Basic Basis0.007602865519%7.2Harden
Bitonic Ordering0.0440754515128%6.8Harden
Condorcet0.007081523120%8.5Harden
Derangement Rotations0.001021676740%6.5Harden
Dominating Duos0.037691228431%6.3Harden
Exam Manipulation0.00119194865634%3.8Mediumen
Exciting Tournament0.0021531214940%7.2Harden
Kth Subtree0.0667082415218%6.0Harden
Longest Common Subsequence0.0029383036244%5.2Mediumen
Magic Trick0.0059670552957%1.4Easyen
Missing Number0.0058322393129%3.7Mediumen
No Thanks!0.00663562193154%1.8Easyen
Painted Corridors0.0113302796624%8.1Harden
Rainbow Numbers0.0026154613625%6.6Harden
Rating Problems0.00512169678656%1.3Easyen
Smoothie Stand0.0089109355951%2.3Easyen
Triangular Collection0.008751222043%5.5Harden
TripTik0.80173841910726%7.7Harden
Unread Messages0.0058184159632%4.5Mediumen