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

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Bracket Pairing0.0032922717276%5.8Harden
Code Guessing0.0014091474381%2.7Easyen
Concert Rehearsal0.0161124710944%7.7Harden
Espresso!0.0065111099189%2.0Easyen
Even Substrings0.569771126861%7.0Harden
Land Equality0.0035528721374%5.1Mediumen
Lone Rook0.0313081207764%7.3Harden
Parking Lot0.051085866070%8.1Harden
Stream Lag0.006663954886%3.5Mediumen
Subprime0.019235229383%3.5Mediumen
Tree Number Generator0.521563916066%5.9Harden
Ultimate Binary Watch0.00791337122191%2.0Easyen
Word Puzzle0.2345517313578%5.0Mediumen