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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Ant Typing0.0127098727528%6.1Harden
Bad Packing0.0028788119122%7.7Harden
Basic Basis0.007602695320%7.2Harden
Bitonic Ordering0.0440752214728%6.9Harden
Condorcet0.007081293124%8.0Harden
Derangement Rotations0.001021395942%6.8Harden
Dominating Duos0.037689228132%6.4Harden
Exam Manipulation0.00119187463334%3.9Mediumen
Exciting Tournament0.0021531044947%7.2Harden
Kth Subtree0.0667075914219%6.4Harden
Longest Common Subsequence0.0029377234645%5.3Mediumen
Magic Trick0.0059437540757%1.5Easyen
Missing Number0.0058317391529%3.8Mediumen
No Thanks!0.00663474187654%1.9Easyen
Painted Corridors0.0113302626625%8.1Harden
Rainbow Numbers0.0026152513426%6.7Harden
Rating Problems0.00511611654456%1.4Easyen
Smoothie Stand0.0089103052851%2.4Easyen
Triangular Collection0.008749221744%5.6Harden
TripTik0.80180839610226%7.8Harden
Unread Messages0.0058175757633%4.5Mediumen