Problems from 2004 ACM ICPC Mid-Central North American Regional Contest

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Flow Layout 2156 1314 61% 0.00 1306 1190 91% 1.9
Ink Blots 82 17 21% 0.00 18 14 78% 5.9
Permutation Code 416 243 58% 0.00 258 224 87% 2.3
Primary X-Subfactor Series 231 80 35% 0.00 95 68 72% 4.2
Speed Limit 21212 11469 54% 0.00 10616 10113 95% 1.5
Symmetric Order 9995 5831 58% 0.00 5452 5166 95% 1.6
Triangle Cuts 73 21 29% 0.00 29 17 59% 6.1