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

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Bracket Pairing0.0032923517976%5.7Harden
Code Guessing0.0014095978582%2.6Easyen
Concert Rehearsal0.0161125111445%7.5Harden
Espresso!0.00651154103590%1.9Easyen
Even Substrings0.449771136961%7.0Harden
Land Equality0.0035529821873%5.2Mediumen
Lone Rook0.0313081207764%7.5Harden
Parking Lot0.051085876170%8.2Harden
Stream Lag0.006667958486%3.1Mediumen
Subprime0.019236730984%3.3Mediumen
Tree Number Generator0.521563926166%6.0Harden
Ultimate Binary Watch0.00791357124091%2.0Easyen
Word Puzzle0.2345518113977%4.9Mediumen