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

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Bracket Pairing0.0032922216775%5.9Harden
Code Guessing0.0014088971981%2.9Mediumen
Concert Rehearsal0.0161123910745%7.7Harden
Espresso!0.0065107695689%2.0Easyen
Even Substrings0.5616741096661%6.9Harden
Land Equality0.0035527720574%5.1Mediumen
Lone Rook0.0313081107366%7.3Harden
Parking Lot0.051085805974%7.6Harden
Stream Lag0.006662153286%3.7Mediumen
Subprime0.019234528683%3.6Mediumen
Tree Number Generator0.531563885765%6.2Harden
Ultimate Binary Watch0.00791321120691%2.1Easyen
Word Puzzle0.2345516813178%4.9Mediumen