Project Euler #189: Tri-colouring a triangular grid

Hacker
Rank
Score
321
flag of Singapore
35.56
322
flag of Singapore
35.56
324
flag of India
34.44
325
flag of Japan
30.00
326
flag of United States
28.89
327
flag of India
28.89
328
flag of India
27.78
329
flag of Spain
27.78
331
flag of India
26.67
332
flag of Georgia
26.67
333
flag of India
26.67
334
flag of India
26.67
335
flag of India
26.67
336
flag of India
26.67
337
flag of India
26.67
338
flag of India
26.67
339
flag of India
26.67
340
flag of India
26.67
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