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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Bracket Pairing0.0032984325730%5.9Harden
Code Guessing0.00140333679524%2.8Mediumen
Concert Rehearsal0.0175281112315%7.8Harden
Espresso!0.00652882104136%2.1Easyen
Even Substrings0.56167442611627%7.0Harden
Land Equality0.00355111922720%5.2Mediumen
Lone Rook0.03130872712818%7.5Harden
Parking Lot0.0510853668523%7.4Harden
Stream Lag0.0066162563139%4.0Mediumen
Subprime0.0192100534634%3.6Mediumen
Tree Number Generator0.53156354110920%5.6Harden
Ultimate Binary Watch0.00793432132839%2.1Easyen
Word Puzzle0.2345557517330%4.9Mediumen