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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.01270120929825%5.9Harden
Bad Packing0.0028793020122%7.5Harden
Basic Basis0.007602865519%7.2Harden
Bitonic Ordering0.0440754615228%6.8Harden
Condorcet0.007081613622%8.5Harden
Derangement Rotations0.001021696840%6.4Harden
Dominating Duos0.037692629031%6.3Harden
Exam Manipulation0.00119195366134%3.7Mediumen
Exciting Tournament0.0021531224940%7.2Harden
Kth Subtree0.0667082515218%6.0Harden
Longest Common Subsequence0.0029385638645%5.2Mediumen
Magic Trick0.0059731556457%1.4Easyen
Missing Number0.0058323293629%3.7Mediumen
No Thanks!0.00663591194854%1.8Easyen
Painted Corridors0.0113302826724%8.0Harden
Rainbow Numbers0.0026155613925%6.5Harden
Rating Problems0.00512363688356%1.3Easyen
Smoothie Stand0.0089110156651%2.2Easyen
Triangular Collection0.008751422143%5.5Harden
TripTik0.80173842010725%7.7Harden
Unread Messages0.0058185260633%4.4Mediumen