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

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Ant Typing0.0127044926559%5.9Harden
Bad Packing0.0028735316948%7.4Harden
Basic Basis0.00760704767%7.2Harden
Bitonic Ordering0.0440720612561%6.9Harden
Condorcet0.00708562545%8.7Harden
Derangement Rotations0.00102604778%6.5Harden
Dominating Duos0.037635321561%5.9Harden
Exam Manipulation0.0011971653374%3.6Mediumen
Exciting Tournament0.002153574274%7.0Harden
Kth Subtree0.0667015611473%5.8Harden
Longest Common Subsequence0.0029348737878%3.9Mediumen
Magic Trick0.00145231499395%1.4Easyen
Missing Number0.0058104279776%3.7Mediumen
No Thanks!0.00661883173792%1.8Easyen
Painted Corridors0.011330734460%8.2Harden
Rainbow Numbers0.0026119812865%6.4Harden
Rating Problems0.00516774652496%1.3Easyen
Smoothie Stand0.008961855089%2.3Easyen
Triangular Collection0.008728021276%5.4Mediumen
TripTik0.441738906370%7.6Harden
Unread Messages0.005870250171%4.4Mediumen