Problems from ICPC North America Championship 2021

Name Fastest Shortest Total Acc. Ratio Difficulty Languages
AND Permutation 0.14 238 309 66 21% 7.9Hard en
Apple Orchard 1.45 6063 80 7 9% 8.6Hard en
Cleaning Robot 0.53 1790 515 140 27% 6.7Hard en
Contest Construction 0.00 355 202 128 63% 5.0Medium en
Ketek Counting 0.06 1001 133 45 34% 6.1Hard en
Mountainous Palindromic Subarray 0.03 411 462 182 39% 4.0Medium en
Permutation CFG 0.25 2906 55 16 29% 7.2Hard en
Special Cycle 0.00 7515 188 5 3% 9.6Hard en
The King's Guards 0.02 2541 79 8 10% 8.8Hard en
The Paladin 0.00 447 275 120 44% 5.0Medium en
Token Game 0.20 1175 130 41 32% 7.0Hard en
TraveLog 0.16 1588 581 111 19% 7.2Hard en
You be The Judge, Again 0.03 567 406 178 44% 3.6Medium en