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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.01270119829425%6.0Harden
Bad Packing0.0028791019722%7.6Harden
Basic Basis0.007602815319%7.3Harden
Bitonic Ordering0.0440753814928%6.9Harden
Condorcet0.007081413122%8.1Harden
Derangement Rotations0.001021546140%6.6Harden
Dominating Duos0.037690828331%6.4Harden
Exam Manipulation0.00119191264834%3.8Mediumen
Exciting Tournament0.0021531184942%7.3Harden
Kth Subtree0.0667082115219%6.0Harden
Longest Common Subsequence0.0029381735744%5.1Mediumen
Magic Trick0.0059625549557%1.4Easyen
Missing Number0.0058321892929%3.8Mediumen
No Thanks!0.00663538191554%1.8Easyen
Painted Corridors0.0113302756624%8.1Harden
Rainbow Numbers0.0026154213625%6.7Harden
Rating Problems0.00512099674856%1.3Easyen
Smoothie Stand0.0089108455351%2.3Easyen
Triangular Collection0.008750822043%5.6Harden
TripTik0.80173841210525%7.9Harden
Unread Messages0.0058183359232%4.5Mediumen