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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.0131595426127%6.2Harden
Bad Packing0.0028786718922%7.7Harden
Basic Basis0.007602515120%7.4Harden
Bitonic Ordering0.0464450414028%6.9Harden
Condorcet0.007081213126%8.1Harden
Derangement Rotations0.001021235545%7.0Harden
Dominating Duos0.037686126831%6.6Harden
Exam Manipulation0.00119181761434%3.9Mediumen
Exciting Tournament0.002153984950%7.3Harden
Kth Subtree0.0667074514119%6.6Harden
Longest Common Subsequence0.0029373533746%5.1Mediumen
Magic Trick0.0059247530257%1.5Easyen
Missing Number0.0058305989629%3.8Mediumen
No Thanks!0.00663340179154%2.0Easyen
Painted Corridors0.0113302506526%8.2Harden
Rainbow Numbers0.0026151613326%6.7Harden
Rating Problems0.00511212631456%1.4Easyen
Smoothie Stand0.008998851052%2.3Easyen
Triangular Collection0.008747421044%5.6Harden
TripTik0.80184637210027%8.0Harden
Unread Messages0.0058172757233%4.5Mediumen