Problems from Hong Kong Regional Online Preliminary 2016

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 6889 1018 15% 0.00 1324 671 51% 6.8
A+B Problem 6646 661 10% 0.03 942 323 34% 8.1
Boxes 1331 484 36% 0.09 325 272 84% 4.2
Classrooms 1098 281 26% 0.08 235 174 74% 6.3
Crazy Driver 640 258 40% 0.00 204 177 87% 3.7
Curious Cupid 1156 208 18% 0.08 171 115 67% 5.9
Dim Sum 90 35 39% 0.04 39 27 69% 7.1
k-Colouring of a Graph 164 40 24% 0.03 31 21 68% 9.2
Let's Meet 593 113 19% 0.00 86 51 59% 8.6
Palindromes 322 77 24% 0.09 83 37 45% 7.5
Take Two Stones 25215 15263 61% 0.00 12647 12178 96% 1.3