Problems from Hong Kong Regional Online Preliminary 2016

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 8953 1321 15% 0.00 1722 861 50% 6.5
A+B Problem 8406 828 10% 0.03 1174 394 34% 8.2
Boxes 1511 589 39% 0.08 381 316 83% 4.3
Classrooms 2201 446 20% 0.08 351 260 74% 5.5
Crazy Driver 758 306 40% 0.00 246 212 86% 3.8
Curious Cupid 1211 224 18% 0.08 185 124 67% 6.3
Dim Sum 95 38 40% 0.04 43 30 70% 7.0
Let's Meet 699 134 19% 0.00 96 60 62% 8.0
Palindromes 390 83 21% 0.09 98 41 42% 8.7
Take Two Stones 33233 20031 60% 0.00 16843 16218 96% 1.3
k-Colouring of a Graph 208 50 24% 0.03 40 27 68% 8.8