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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.0131596226728%6.2Harden
Bad Packing0.0028786819022%7.7Harden
Basic Basis0.007602575220%7.2Harden
Bitonic Ordering0.0464451314628%6.9Harden
Condorcet0.007081213126%8.0Harden
Derangement Rotations0.001021295845%6.8Harden
Dominating Duos0.037688528032%6.3Harden
Exam Manipulation0.00119184562434%3.9Mediumen
Exciting Tournament0.002153984950%7.2Harden
Kth Subtree0.0667074514119%6.6Harden
Longest Common Subsequence0.0029375434145%5.2Mediumen
Magic Trick0.0059345536057%1.5Easyen
Missing Number0.0058313090629%3.8Mediumen
No Thanks!0.00663436184754%1.9Easyen
Painted Corridors0.0113302506526%8.2Harden
Rainbow Numbers0.0026151613326%6.7Harden
Rating Problems0.00511290636756%1.4Easyen
Smoothie Stand0.0089102052351%2.4Easyen
Triangular Collection0.008748621644%5.6Harden
TripTik0.80184638510126%7.9Harden
Unread Messages0.0058173557333%4.5Mediumen