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%2.9Mediumen
Concert Rehearsal0.0175281112315%7.8Harden
Espresso!0.00652876103736%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%3.9Mediumen
Subprime0.0192100534634%3.6Mediumen
Tree Number Generator0.53156353610820%5.9Harden
Ultimate Binary Watch0.00793431132739%2.1Easyen
Word Puzzle0.2345557517330%4.9Mediumen