Project Euler #189: Tri-colouring a triangular grid

Hacker
Rank
Score
21
flag of South Africa
100.00
22
flag of Bangladesh
100.00
23
flag of Germany
100.00
24
flag of Indonesia
100.00
25
flag of India
100.00
26
flag of Canada
100.00
27
flag of United States
100.00
29
flag of United States
90.00
30
flag of Belgium
84.44
31
flag of Republic of Korea
84.44
32
flag of China
82.22
37
flag of Spain
78.89
38
flag of Germany
78.89
40
flag of India
78.89
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