Problems from 2021 ICPC North America Regionals (February 26 2022)

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Bracket Pairing0.0032981124730%6.1Harden
Code Guessing0.00140330778824%2.9Mediumen
Concert Rehearsal0.0175280512215%7.8Harden
Espresso!0.00652845102436%2.1Easyen
Even Substrings0.56167441811427%7.0Harden
Land Equality0.00355111322720%5.2Mediumen
Lone Rook0.03130870812217%7.6Harden
Parking Lot0.0510853578323%7.5Harden
Stream Lag0.0066161062439%3.9Mediumen
Subprime0.019299334234%3.7Mediumen
Tree Number Generator0.53156352810820%5.9Harden
Ultimate Binary Watch0.00793406132239%2.1Easyen
Word Puzzle0.2345555617131%4.9Mediumen