Problems from 2020 ICPC North American Qualifier Contest

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Drawing Circles 995 179 18% 0.22 124 81 65% 8.1
Perfect Path Patrol 445 199 45% 0.04 184 150 82% 6.0
Sky's the Limit 585 75 13% 0.01 147 50 34% 8.8
Using Digits 747 307 41% 0.00 311 251 81% 4.9