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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.0131597027028%6.2Harden
Bad Packing0.0028787719122%7.7Harden
Basic Basis0.007602655320%7.2Harden
Bitonic Ordering0.0440751814728%6.9Harden
Condorcet0.007081253125%8.0Harden
Derangement Rotations0.001021365943%6.8Harden
Dominating Duos0.037689028132%6.4Harden
Exam Manipulation0.00119187063234%3.9Mediumen
Exciting Tournament0.0021531024948%7.2Harden
Kth Subtree0.0667075714219%6.4Harden
Longest Common Subsequence0.0029377034645%5.3Mediumen
Magic Trick0.0059419539957%1.5Easyen
Missing Number0.0058316891429%3.8Mediumen
No Thanks!0.00663468187254%1.9Easyen
Painted Corridors0.0113302606625%8.1Harden
Rainbow Numbers0.0026152313426%6.7Harden
Rating Problems0.00511605654056%1.4Easyen
Smoothie Stand0.0089102852851%2.4Easyen
Triangular Collection0.008749021744%5.6Harden
TripTik0.80180839410226%7.8Harden
Unread Messages0.0058175557633%4.5Mediumen