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

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Bracket Pairing0.0032922116675%5.8Harden
Code Guessing0.0014087971181%2.8Mediumen
Concert Rehearsal0.0175223710544%7.6Harden
Espresso!0.0065104993289%2.0Easyen
Even Substrings0.5616741096661%6.7Harden
Land Equality0.0035527620474%5.1Mediumen
Lone Rook0.0313081097266%7.3Harden
Parking Lot0.051085805974%7.4Harden
Stream Lag0.006660852186%3.8Mediumen
Subprime0.019233828183%3.6Mediumen
Tree Number Generator0.531563855666%5.6Harden
Ultimate Binary Watch0.00791313119891%2.1Easyen
Word Puzzle0.2345516412979%4.9Mediumen