Problems from Hong Kong Regional Online Preliminary 2016

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 2620 437 17% 0.01 564 317 56% 6.9
A+B Problem 2727 264 10% 0.06 433 145 33% 8.5
Boxes 919 322 35% 0.19 214 180 84% 4.1
Classrooms 630 168 27% 0.10 149 104 70% 6.8
Crazy Driver 517 210 41% 0.00 169 146 86% 3.8
Curious Cupid 1045 157 15% 0.15 133 87 65% 6.8
Dim Sum 53 27 51% 0.05 24 21 88% 6.0
k-Colouring of a Graph 113 27 24% 0.05 20 15 75% 7.8
Let's Meet 452 76 17% 0.01 63 42 67% 7.3
Palindromes 168 40 24% 0.15 47 22 47% 8.9
Take Two Stones 8974 5842 65% 0.00 4793 4612 96% 1.2