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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Bracket Pairing0.0032973822831%6.1Harden
Code Guessing0.00140319776324%2.9Mediumen
Concert Rehearsal0.0275277611615%7.7Harden
Espresso!0.0065255795437%2.1Easyen
Even Substrings0.56167437610628%7.2Harden
Land Equality0.00355109522721%5.1Mediumen
Lone Rook0.03130866411617%8.3Harden
Parking Lot0.0510853357924%8.0Harden
Stream Lag0.0066112152146%3.0Mediumen
Subprime0.019291631935%3.8Mediumen
Tree Number Generator0.53156347510422%6.4Harden
Ultimate Binary Watch0.00793103121039%2.0Easyen
Word Puzzle0.2345553216932%4.8Mediumen