Problems from 2020 ICPC North America Regionals (March 6 2021)

Name Fastest Shortest Total Acc. Ratio Difficulty Languages
Ant Typing 0.02 399 700 205 29% 6.1Hard en
Bad Packing 0.00 590 755 159 21% 7.8Hard en
Basic Basis 0.01 760 202 44 22% 6.4Hard en
Bitonic Ordering 0.04 407 428 114 27% 7.2Hard en
Condorcet 0.00 708 97 27 28% 8.7Hard en
Derangement Rotations 0.00 191 91 45 49% 5.6Hard en
Dominating Duos 0.03 191 642 146 23% 7.6Hard en
Exam Manipulation 0.00 193 1115 401 36% 4.9Medium en
Exciting Tournament 0.01 2153 80 45 56% 6.8Hard en
Kth Subtree 0.06 670 601 118 20% 6.7Hard en
Longest Common Subsequence 0.00 293 571 270 47% 5.3Medium en
Magic Trick 0.00 16 5563 3641 65% 1.4Easy en
Missing Number 0.00 58 1749 637 36% 3.4Medium en
No Thanks! 0.00 66 1941 1085 56% 2.0Easy en
Painted Corridors 0.01 1491 166 58 35% 8.3Hard en
Rainbow Numbers 0.00 261 432 114 26% 6.9Hard en
Rating Problems 0.00 51 7637 4506 59% 1.4Easy en
Smoothie Stand 0.00 125 688 369 54% 2.6Easy en
Triangular Collection 0.00 218 399 166 42% 6.1Hard en
TripTik 0.80 1808 258 69 27% 7.1Hard en
Unread Messages 0.00 142 1435 468 33% 4.2Medium en