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

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Bracket Pairing0.0032922416975%5.9Harden
Code Guessing0.0014089272281%2.8Mediumen
Concert Rehearsal0.0161124410844%7.7Harden
Espresso!0.0065107995989%2.0Easyen
Even Substrings0.569771096661%6.9Harden
Land Equality0.0035527820674%5.1Mediumen
Lone Rook0.0313081117467%7.0Harden
Parking Lot0.051085805974%7.5Harden
Stream Lag0.006663053986%3.6Mediumen
Subprime0.019234728883%3.6Mediumen
Tree Number Generator0.531563885765%6.2Harden
Ultimate Binary Watch0.00791322120791%2.1Easyen
Word Puzzle0.2345516813178%4.9Mediumen