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

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Bracket Pairing0.0032978924131%6.1Harden
Code Guessing0.00140321877024%2.9Mediumen
Concert Rehearsal0.0175278611915%7.8Harden
Espresso!0.0065265898337%2.1Easyen
Even Substrings0.56167439010727%6.9Harden
Land Equality0.00355110022721%5.3Mediumen
Lone Rook0.03130869112017%7.9Harden
Parking Lot0.0510853397923%8.0Harden
Stream Lag0.0066156761439%4.3Mediumen
Subprime0.019297133735%3.7Mediumen
Tree Number Generator0.53156347810422%6.3Harden
Ultimate Binary Watch0.00793209126139%2.0Easyen
Word Puzzle0.2345553516932%4.9Mediumen