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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.0131578123931%6.1Harden
Bad Packing0.0039181217321%7.8Harden
Basic Basis0.007602255022%6.4Harden
Bitonic Ordering0.0440746713128%7.1Harden
Condorcet0.007081053029%8.1Harden
Derangement Rotations0.001021125448%7.2Harden
Dominating Duos0.037676421528%7.1Harden
Exam Manipulation0.00119139952638%4.3Mediumen
Exciting Tournament0.012153834655%7.5Harden
Kth Subtree0.0667063212620%6.8Harden
Longest Common Subsequence0.0029365731147%5.2Mediumen
Magic Trick0.0057968482060%1.4Easyen
Missing Number0.0058226977634%3.5Mediumen
No Thanks!0.00662794152455%2.1Easyen
Painted Corridors0.0114051716136%8.4Harden
Rainbow Numbers0.0026145712427%6.8Harden
Rating Problems0.005110346584456%1.4Easyen
Smoothie Stand0.008985645553%2.5Easyen
Triangular Collection0.008744720145%5.8Harden
TripTik0.8018083349528%7.8Harden
Unread Messages0.0058157653334%4.3Mediumen