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 Guessing0.0014096278882%2.6Easyen
Concert Rehearsal0.0161125111445%7.5Harden
Espresso!0.00651162104190%1.9Easyen
Even Substrings0.449771136961%7.0Harden
Land Equality0.0035530322273%5.2Mediumen
Lone Rook0.0313081207764%7.5Harden
Parking Lot0.051085876170%8.2Harden
Stream Lag0.006668258786%3.0Mediumen
Subprime0.019237131184%3.3Mediumen
Tree Number Generator0.521563936267%5.8Harden
Ultimate Binary Watch0.00791363124491%2.1Easyen
Word Puzzle0.2345518214077%4.8Mediumen