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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.01270119229425%6.0Harden
Bad Packing0.0028789619322%7.7Harden
Basic Basis0.007602765319%7.3Harden
Bitonic Ordering0.0440752914728%6.9Harden
Condorcet0.007081363123%8.1Harden
Derangement Rotations0.001021486141%6.7Harden
Dominating Duos0.037690228331%6.4Harden
Exam Manipulation0.00119190364534%3.9Mediumen
Exciting Tournament0.0021531124944%7.3Harden
Kth Subtree0.0667080314919%6.2Harden
Longest Common Subsequence0.0029379334944%5.3Mediumen
Magic Trick0.0059586547157%1.5Easyen
Missing Number0.0058321292929%3.8Mediumen
No Thanks!0.00663521190554%1.9Easyen
Painted Corridors0.0113302706624%8.2Harden
Rainbow Numbers0.0026153513525%6.7Harden
Rating Problems0.00512027671156%1.3Easyen
Smoothie Stand0.0089107654951%2.3Easyen
Triangular Collection0.008750221944%5.6Harden
TripTik0.80173840710526%7.9Harden
Unread Messages0.0058182459232%4.5Mediumen