Project Euler #189: Tri-colouring a triangular grid

Hacker
Rank
Score
401
flag of Brazil
15.56
402
flag of India
15.56
403
flag of India
15.56
405
flag of Serbia
14.44
406
flag of India
14.44
408
flag of India
14.44
409
flag of India
14.44
414
flag of India
14.44
416
flag of United States
14.44
417
flag of India
14.44
419
flag of Netherlands
14.44
420
flag of India
13.33
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