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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.0127098927528%6.2Harden
Bad Packing0.0028788319122%7.7Harden
Basic Basis0.007602715320%7.3Harden
Bitonic Ordering0.0440752414728%6.9Harden
Condorcet0.007081313124%8.1Harden
Derangement Rotations0.001021436042%6.8Harden
Dominating Duos0.037689828332%6.4Harden
Exam Manipulation0.00119188964034%3.9Mediumen
Exciting Tournament0.0021531084945%7.3Harden
Kth Subtree0.0667078414418%6.3Harden
Longest Common Subsequence0.0029378334844%5.2Mediumen
Magic Trick0.0059568546457%1.5Easyen
Missing Number0.0058319992629%3.8Mediumen
No Thanks!0.00663513190154%1.9Easyen
Painted Corridors0.0113302666625%8.1Harden
Rainbow Numbers0.0026152913425%6.7Harden
Rating Problems0.00511878663456%1.3Easyen
Smoothie Stand0.0089105954251%2.3Easyen
Triangular Collection0.008749821944%5.6Harden
TripTik0.80173840310526%7.8Harden
Unread Messages0.0058179458533%4.5Mediumen